2021-02-08 01:05:53,450 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:711] 172.23.120.170: 1 core dump seen
2021-02-08 01:06:02,342 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:712] 172.23.120.170: Stack Trace of first crash - ce04acfa-dcba-4450-f36a8b96-0e910304.dmp
Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'.
 #0  0x00007f6ddcb8c387 in raise () from /lib64/libc.so.6
 #0  0x00007f6ddcb8c387 in raise () from /lib64/libc.so.6
 No symbol table info available.
 #1  0x00007f6ddcb8da78 in abort () from /lib64/libc.so.6
 No symbol table info available.
 #2  0x00007f6ddd6ea195 in __gnu_cxx::__verbose_terminate_handler () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/vterminate.cc:95
         terminating = false
         t = <optimized out>
 #3  0x0000000000555bf2 in backtrace_terminate_handler () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:86
 No locals.
 #4  0x00007f6ddd6e7f86 in __cxxabiv1::__terminate (handler=<optimized out>) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:47
 No locals.
 #5  0x00007f6ddd6e7fd1 in std::terminate () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:57
 No locals.
 #6  0x00007f6de10f91d3 in GlobalTask::execute (this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:78
 No locals.
 #7  0x00007f6de10f2d02 in operator() (__closure=0x7f6d6cfe0040) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
         executedAt = <optimized out>
         end = <optimized out>
         scheduleOverhead = <optimized out>
         start = {__d = {__r = 953509117181810}}
         runAgain = false
         proxy = @0x7f6dd37d3190: <error reading variable>
 #8  folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
         fn = @0x7f6d6cfe0040: {__proxy = @0x7f6dd37d3190}
 #9  0x00007f6de1273e76 in operator() (this=0x7f6d6cfe0040) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
         fn = @0x7f6d6cfe0040: {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x7f6dd37d3190, tiny = {__data = "\220\061}\323m\177\000\000\000\000\000\000\000\000\000\000P\374>lm\177\000\000\200/\000\214m\177\000\000\001\000\000\000\000\000\000\000\220\000\376lm\177\000", __align = {<No data fields>}}}, call_ = 0x7f6de10f2c40 <folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&)>, exec_ = 0x7f6de10f0650 <folly::detail::function::execSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Op, folly::detail::function::Data*, folly::detail::function::Data)>}
 #10 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=0x7f6dd37f2c00, thread=..., task=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
         rctx = {prev_ = {<std::__shared_ptr<folly::RequestContext, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<folly::RequestContext, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x0, _M_refcount = {_M_pi = 0x0}}, <No data fields>}}
         startTime = {__d = {__r = 953509117177063}}
         stats = {expired = false, waitTime = {__r = 26880}, runTime = {__r = 0}, enqueueTime = {__d = {__r = 953509117150183}}, requestId = 0}
 #11 0x00007f6de125c36a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f6dd37f2c00, thread=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
         guard = {list_ = {forbid = true, prev = 0x0, curr = {name = {static npos = <optimized out>, b_ = 0x7f6de12dc05b "CPUThreadPoolExecutor", e_ = 0x7f6de12dc070 ""}}}}
 #12 0x00007f6de1276f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 No locals.
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 No locals.
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
 No locals.
 #15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
 No locals.
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
         fn = <optimized out>
 #17 0x00007f6de10f1488 in operator() (this=0x7f6dd37abcc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7f6dd37abcc0: <error reading variable>
 #18 operator() (__closure=0x7f6dd37abcc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
         threadNameOpt = {storage_ = {{emptyState = -112 '\220', value = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7f6d6cfe0190 "WriterPool3"}, _M_string_length = 11, {_M_local_buf = "WriterPool3\000\000\000\000", _M_allocated_capacity = 8021036716417184343}}}, hasValue = true}}
         func = <error reading variable func (Cannot access memory at address 0x7f6dd37abcc0)>
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7f6dd37abcc0: <error reading variable>
 #20 0x00007f6de10f1363 in operator() (this=0x7f6dd3595ee0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7f6dd3595ee0: <error reading variable>
 #21 operator() (__closure=0x7f6dd3595ed0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
         func = <error reading variable func (Cannot access memory at address 0x7f6dd3595ee0)>
         priority = <error reading variable priority (Cannot access memory at address 0x7f6dd3595ed0)>
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7f6dd3595ed0: <error reading variable>
 #23 0x00007f6ddd712dcf in std::execute_native_thread_routine (__p=0x7f6dd37cfe60) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
         __t = {_M_t = {_M_t = {<std::_Tuple_impl<0, std::thread::_State*, std::default_delete<std::thread::_State> >> = {<std::_Tuple_impl<1, std::default_delete<std::thread::_State> >> = {<std::_Head_base<1, std::default_delete<std::thread::_State>, true>> = {<std::default_delete<std::thread::_State>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, std::thread::_State*, false>> = {_M_head_impl = 0x7f6dd37cfe60}, <No data fields>}, <No data fields>}}}
 #24 0x00007f6ddcf2bea5 in start_thread () from /lib64/libpthread.so.0
 No symbol table info available.
 #25 0x00007f6ddcc548dd in clone () from /lib64/libc.so.6
 No symbol table info available.


[Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib64/libthread_db.so.1".
 Loaded symbols for /lib64/libpthread.so.0
 Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib64/libc.so.6
 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
 Loaded symbols for /lib64/ld-linux-x86-64.so.2
 Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done.
 Loaded symbols for /lib64/librt.so.1
 0x00007f7481f2deb3 in epoll_wait () from /lib64/libc.so.6
 
 Thread 41 (Thread 0x7f74813ff700 (LWP 47339)):
 #0  0x00007f7482208de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f7483cd85a7 in background_thread_sleep (tsdn=<optimized out>, 
     interval=10000000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=0, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_thread0_work (tsd=0x7f74813e6a60)
     at src/background_thread.c:452
 #4  background_work (ind=<optimized out>, tsd=0x7f74813e6a60)
     at src/background_thread.c:490
 #5  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #6  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 40 (Thread 0x7f748067e700 (LWP 47340)):
 #0  0x00007f7482208de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f74857008cd in __gthread_cond_timedwait (
     __abs_timeout=0x7f7480664fa0, __mutex=<optimized out>, 
     __cond=0x7f748182e138)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f748182e138)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7f748182e138)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __atime=..., __lock=..., this=0x7f748182e138)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1, 1000>, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __rtime=<synthetic pointer>, __lock=..., 
     this=0x7f748182e138)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  dequeue_for (wait_duration=..., popped_item=..., this=0x7f748182e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/mpmc_blocking_q.h:61
 #7  spdlog::details::thread_pool::process_next_msg_ (
     this=this@entry=0x7f748182e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:193
 #8  0x00007f7485700e20 in spdlog::details::thread_pool::worker_loop_ (
     this=0x7f748182e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:184
 #9  0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7481858c40)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #10 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 39 (Thread 0x7f747fe7d700 (LWP 47341)):
 #0  0x00007f7482208de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f74856fff8a in __gthread_cond_timedwait (
     __abs_timeout=0x7f747fe641f0, __mutex=<optimized out>, 
     __cond=<optimized out>)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> >
     (__p=..., __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1>, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__p=..., __rtime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  operator() (__closure=0x7f74819ffa08)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/periodic_worker.h:38
 #7  __invoke_impl<void, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (
     __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:60
 #8  __invoke<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  _M_invoke<0> (this=0x7f74819ffa08)
     at /usr/local/include/c++/7.3.0/thread:234
 #10 operator() (this=0x7f74819ffa08)
     at /usr/local/include/c++/7.3.0/thread:243
 #11 _ZNSt6thread11_State_implINS_8_InvokerISt5tupleIJZN6spdlog7details15periodic_workerC4ERKSt8functionIFvvEENSt6chrono8durationIlSt5ratioILl1ELl1EEEEEUlvE_EEEEE6_M_runEv (this=0x7f74819ffa00) at /usr/local/include/c++/7.3.0/thread:186
 #12 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f74819ffa00)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 38 (Thread 0x7f747f67c700 (LWP 47342)):
 #0  0x00007f7481f22c3d in poll () from /lib64/libc.so.6
 #1  0x000000000046a0de in get_command (buffsize=80, buffer=0x7f747f6631d0 "")
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:49
 #2  check_stdin_thread (arg=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:90
 #3  0x00007f74849c72d7 in run (this=0x7f7481859c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #4  platform_thread_wrap (arg=0x7f7481859c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #5  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 37 (Thread 0x7f747ee7b700 (LWP 47343)):
 #0  0x00007f7482208a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f7485f9dbfb in consume_socket (thread_index=<optimized out>, 
     sp=0xf94240, ctx=0xf92d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0xf93950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0xf93950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 36 (Thread 0x7f747e67a700 (LWP 47344)):
 #0  0x00007f7482208a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f7485f9dbfb in consume_socket (thread_index=<optimized out>, 
     sp=0xf94c28, ctx=0xf92d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0xf94338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0xf94338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 35 (Thread 0x7f747de79700 (LWP 47345)):
 #0  0x00007f7481f22c3d in poll () from /lib64/libc.so.6
 #1  0x00007f7485f94ba8 in master_thread_run (ctx=0xf92d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19148
 #2  master_thread (thread_func_param=0xf92d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19243
 #3  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #4  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 34 (Thread 0x7f747d678700 (LWP 47346)):
 #0  0x00007f7482208de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004917e0 in __gthread_cond_timedwait (
     __abs_timeout=0x7f747d65f1d0, __mutex=<optimized out>, 
     __cond=0x7f748182f0f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=<synthetic pointer>, this=0x7f748182f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=<synthetic pointer>, this=0x7f748182f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=<synthetic pointer>, 
     __lock=<synthetic pointer>, this=0x7f748182f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  ExternalAuthManagerThread::run (this=0x7f748182f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/external_auth_manager_thread.cc:229
 #6  0x00007f74849d220f in Couchbase::Thread::thread_entry (
     this=0x7f748182f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #7  0x00007f74849c72d7 in run (this=0x7f748185a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #8  platform_thread_wrap (arg=0x7f748185a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #9  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #10 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 33 (Thread 0x7f7477fff700 (LWP 47347)):
 #0  0x00007f7482208de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004efcb6 in __gthread_cond_timedwait (
     __abs_timeout=0x7f7477fe61f0, __mutex=<optimized out>, 
     __cond=0x7f748068e8f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f748068e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7f748068e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1> > (__rtime=..., __lock=..., 
     this=0x7f748068e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  AuditImpl::consume_events (this=0x7f748068e500)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/auditd/src/audit.cc:414
 #6  0x00007f74849c72d7 in run (this=0x7f748185a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #7  platform_thread_wrap (arg=0x7f748185a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #8  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #9  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 32 (Thread 0x7f74777fe700 (LWP 47348)):
 #0  0x00007f7481f2deb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f7483a9f3c5 in epoll_dispatch (base=0x7f7481823300, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f7483a96376 in event_base_loop (base=0x7f7481823300, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f748094c000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f74849c72d7 in run (this=0x7f747cb62730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f747cb62730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 31 (Thread 0x7f7476ffd700 (LWP 47349)):
 #0  0x00007f7481f2deb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f7483a9f3c5 in epoll_dispatch (base=0x7f7481823600, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f7483a96376 in event_base_loop (base=0x7f7481823600, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f748094caa8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f74849c72d7 in run (this=0x7f747cb624f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f747cb624f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 30 (Thread 0x7f74767fc700 (LWP 47350)):
 #0  0x00007f7481f2deb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f7483a9f3c5 in epoll_dispatch (base=0x7f7481823900, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f7483a96376 in event_base_loop (base=0x7f7481823900, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f748094d550)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f74849c72d7 in run (this=0x7f747cb626d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f747cb626d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 29 (Thread 0x7f7475ffb700 (LWP 47351)):
 #0  0x00007f7481f2deb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f7483a9f3c5 in epoll_dispatch (base=0x7f7481823c00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f7483a96376 in event_base_loop (base=0x7f7481823c00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f748094dff8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f74849c72d7 in run (this=0x7f747cb627f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f747cb627f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 28 (Thread 0x7f74757fa700 (LWP 47352)):
 #0  0x00007f7481f2deb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f7483a9f3c5 in epoll_dispatch (base=0x7f7481823f00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f7483a96376 in event_base_loop (base=0x7f7481823f00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f748094eaa0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f74849c72d7 in run (this=0x7f747cb62670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f747cb62670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 27 (Thread 0x7f7474ff9700 (LWP 47353)):
 #0  0x00007f7481f2deb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f7483a9f3c5 in epoll_dispatch (base=0x7f7481824200, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f7483a96376 in event_base_loop (base=0x7f7481824200, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f748094f548)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f74849c72d7 in run (this=0x7f747cb62850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f747cb62850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 26 (Thread 0x7f746ffff700 (LWP 47354)):
 #0  0x00007f7481f2deb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f7483a9f3c5 in epoll_dispatch (base=0x7f7481824500, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f7483a96376 in event_base_loop (base=0x7f7481824500, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f748094fff0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f74849c72d7 in run (this=0x7f747cb62610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f747cb62610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 25 (Thread 0x7f746f7fe700 (LWP 47355)):
 #0  0x00007f7482208a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f74829e61bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f747cc6b158)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f747cc6b158, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f747cc6b000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f74849d220f in Couchbase::Thread::thread_entry (
     this=0x7f747cc6b000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f74849c72d7 in run (this=0x7f747cb62640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f747cb62640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 24 (Thread 0x7f746effd700 (LWP 47356)):
 #0  0x00007f7482208a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f74829e61bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f747cc6b318)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f747cc6b318, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f747cc6b1c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f74849d220f in Couchbase::Thread::thread_entry (
     this=0x7f747cc6b1c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f74849c72d7 in run (this=0x7f747cb62820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f747cb62820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 23 (Thread 0x7f746e7fc700 (LWP 47357)):
 #0  0x00007f7482208a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f74829e61bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f747cc6b4d8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f747cc6b4d8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f747cc6b380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f74849d220f in Couchbase::Thread::thread_entry (
     this=0x7f747cc6b380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f74849c72d7 in run (this=0x7f747cb62910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f747cb62910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 22 (Thread 0x7f746dffb700 (LWP 47358)):
 #0  0x00007f7482208a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f74829e61bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f747cc6b698)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f747cc6b698, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f747cc6b540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f74849d220f in Couchbase::Thread::thread_entry (
     this=0x7f747cc6b540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f74849c72d7 in run (this=0x7f747cb627c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f747cb627c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 21 (Thread 0x7f746d7fa700 (LWP 47359)):
 #0  0x00007f7482208a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f74829e61bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f747cc6b858)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f747cc6b858, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f747cc6b700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f74849d220f in Couchbase::Thread::thread_entry (
     this=0x7f747cc6b700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f74849c72d7 in run (this=0x7f747cb62970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f747cb62970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 20 (Thread 0x7f746cff9700 (LWP 47360)):
 #0  0x00007f7482208a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f74829e61bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f747cc6ba18)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f747cc6ba18, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f747cc6b8c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f74849d220f in Couchbase::Thread::thread_entry (
     this=0x7f747cc6b8c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f74849c72d7 in run (this=0x7f747cb62760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f747cb62760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 19 (Thread 0x7f746c7f8700 (LWP 47361)):
 #0  0x00007f7482208a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f74829e61bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f747cc6bbd8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f747cc6bbd8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f747cc6ba80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f74849d220f in Couchbase::Thread::thread_entry (
     this=0x7f747cc6ba80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f74849c72d7 in run (this=0x7f747cb62790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f747cb62790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 18 (Thread 0x7f746a3f6700 (LWP 47364)):
 #0  0x00007f7482208de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f7483cd7e51 in background_thread_sleep (tsdn=<optimized out>, 
     interval=2850000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=<optimized out>, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_work (ind=<optimized out>, tsd=0x7f746a3dda60)
     at src/background_thread.c:497
 #4  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #5  0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 17 (Thread 0x7f7469bf5700 (LWP 47365)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda1f8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda1f8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda1f8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f7460000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f7460000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7481838cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7481838cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f7480940140)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f7480940130)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7480697440)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 16 (Thread 0x7f74693f4700 (LWP 47366)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda210)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda210, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda210, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f7460000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f7460000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7481838dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7481838dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f7480940190)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f7480940180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f74806974b0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 15 (Thread 0x7f7468bf3700 (LWP 47367)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda168)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda168, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda168, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f7460000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f7460000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7481838e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7481838e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f74809401e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f74809401d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7480697520)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 14 (Thread 0x7f744ffff700 (LWP 47368)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda198)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda198, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda198, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f7460000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f7460000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7481838e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7481838e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f7480940230)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f7480940220)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7480697590)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 13 (Thread 0x7f744dfd9700 (LWP 47369)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda228)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda228, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda228, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f7460000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f7460000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7481838ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7481838ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f7480940280)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f7480940270)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7480697600)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 12 (Thread 0x7f744d7d8700 (LWP 47370)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda1c8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda1c8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda1c8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f7460000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f7460000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7481838e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7481838e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f74809402d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f74809402c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7480697670)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 11 (Thread 0x7f744cfd7700 (LWP 47371)):
 #0  0x00007ffe3ce566c2 in clock_gettime ()
 #1  0x00007f7481f437fd in clock_gettime () from /lib64/libc.so.6
 #2  0x00007f74829e4111 in std::chrono::_V2::steady_clock::now ()
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/chrono.cc:90
 #3  0x00007f7486485096 in GenericBlockTimer (o=0x0, n=0x0, d=<optimized out>, 
     this=0x7f744cfbd430)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/histogram.h:444
 #4  StatsOps::pread (this=0x7f747445e360, errinfo=0x7f74746b6d00, 
     h=0x7f74680b5440, buf=0x7f74681d9000, sz=4096, off=25513984)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-fs-stats.cc:116
 #5  0x00007f7485cf5501 in load_buffer_from (nbyte=<optimized out>, 
     offset=<optimized out>, buf=0x7f73e4a230f0, errinfo=0x7f74746b6d00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/iobuffer.cc:447
 #6  BufferedFileOps::pread (this=<optimized out>, errinfo=<optimized out>, 
     handle=0x7f746810ecf0, buf=<optimized out>, nbyte=8, offset=25514143)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/iobuffer.cc:645
 #7  0x00007f7485ce624b in read_skipping_prefixes (dst=0x7f744cfbd608, len=8, 
     pos=<synthetic pointer>, file=0x7f74746b6ce0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_file_read.cc:115
 #8  pread_bin_internal (file=0x7f74746b6ce0, pos=pos@entry=25514143, 
     ret_ptr=ret_ptr@entry=0x7f744cfbd658, 
     max_header_size=max_header_size@entry=0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_file_read.cc:147
 #9  0x00007f7485ce688a in pread_compressed (file=<optimized out>, 
     pos=pos@entry=25514143, ret_ptr=ret_ptr@entry=0x7f744cfbd6f8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_file_read.cc:204
 #10 0x00007f7485cd4eea in btree_lookup_inner (rq=rq@entry=0x7f744cfbda30, 
     diskpos=25514143, current=current@entry=0, end=end@entry=1)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_read.cc:43
 #11 0x00007f7485cd5093 in btree_lookup_inner (rq=rq@entry=0x7f744cfbda30, 
     diskpos=<optimized out>, current=current@entry=0, end=end@entry=1)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_read.cc:76
 #12 0x00007f7485cd5093 in btree_lookup_inner (rq=rq@entry=0x7f744cfbda30, 
     diskpos=<optimized out>, current=current@entry=0, end=end@entry=1)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_read.cc:76
 #13 0x00007f7485cd5093 in btree_lookup_inner (rq=rq@entry=0x7f744cfbda30, 
     diskpos=<optimized out>, current=current@entry=0, end=1)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_read.cc:76
 #14 0x00007f7485cd54b1 in btree_lookup (rq=rq@entry=0x7f744cfbda30, 
     root_pointer=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_read.cc:162
 #15 0x00007f7485cdb83d in couchstore_changes_since (db=0x7f74746b6ce0, 
     since=<optimized out>, options=<optimized out>, 
     callback=callback@entry=0x7f748648dfc0 <bySeqnoScanCallback(Db*, DocInfo*, void*)>, ctx=ctx@entry=0x7f74740c85e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_db.cc:1110
 #16 0x00007f748648b959 in CouchKVStore::scan (this=0x7f74746c3b00, ctx=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:2141
 #17 0x00007f7486456b93 in Warmup::loadKVPairsforShard (this=0x7f747471b000, 
     shardId=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/warmup.cc:1524
 #18 0x00007f7486462fb0 in WarmupLoadingKVPairs::run (this=0x7f746820f090)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/warmup.cc:475
 #19 0x00007f74863d21b3 in GlobalTask::execute (this=0x7f746820f090)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:75
 #20 0x00007f74863cbd02 in operator() (__closure=0x7f744cfbe040)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
 #21 folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
 #22 0x00007f748654ce76 in operator() (this=0x7f744cfbe040)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
 #23 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (
     this=this@entry=0x7f747cb2b800, thread=..., 
     task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
 #24 0x00007f748653536a in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
 #25 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #26 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #27 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #28 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #29 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #30 0x00007f74863ca488 in operator() (this=0x7f7481838f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #31 operator() (__closure=0x7f7481838f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #32 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #33 0x00007f74863ca363 in operator() (this=0x7f7480940320)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #34 operator() (__closure=0x7f7480940310)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #35 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #36 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f74806976e0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #37 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #38 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 10 (Thread 0x7f743ffff700 (LWP 47372)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda1e0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda1e0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda1e0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f7460000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f7460000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7481838f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7481838f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f7480940370)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f7480940360)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7480697750)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 9 (Thread 0x7f743f7fe700 (LWP 47373)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda048)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda048, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda048, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f74600024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f74600024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7480bf8080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7480bf8080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f7480940500)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f74809404f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f74806977c0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 8 (Thread 0x7f743effd700 (LWP 47374)):
 #0  tsd_fetch_impl (minimal=false, init=false)
     at include/jemalloc/internal/tsd.h:359
 #1  tsdn_fetch () at include/jemalloc/internal/tsd.h:394
 #2  je_sallocx (ptr=ptr@entry=0x7f7474253780, flags=flags@entry=0)
     at src/jemalloc.c:3470
 #3  0x00007f74849d5bdc in cb::JEArenaCoreLocalTracker::memDeallocated (
     index=0 '\000', ptr=ptr@entry=0x7f7474253780)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/je_arena_corelocal_tracker.cc:128
 #4  0x00007f74849d611f in memDeallocated (ptr=0x7f7474253780, 
     index=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/je_arena_malloc.h:135
 #5  cb::_JEArenaMalloc<cb::JEArenaCoreLocalTracker>::free (ptr=0x7f7474253780)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/je_arena_malloc.cc:274
 #6  0x00000000005218bb in free (ptr=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/cb_arena_malloc.h:170
 #7  cb_free (ptr=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_malloc_arena.cc:73
 #8  0x00007f7485cd50e1 in btree_lookup_inner (rq=0x1, 
     rq@entry=0x7f743efe2490, diskpos=<optimized out>, 
     current=<optimized out>, current@entry=0, end=end@entry=1)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_read.cc:153
 #9  0x00007f7485cd5093 in btree_lookup_inner (rq=rq@entry=0x7f743efe2490, 
     diskpos=<optimized out>, current=current@entry=0, end=end@entry=1)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_read.cc:76
 #10 0x00007f7485cd5093 in btree_lookup_inner (rq=rq@entry=0x7f743efe2490, 
     diskpos=<optimized out>, current=current@entry=0, end=end@entry=1)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_read.cc:76
 #11 0x00007f7485cd5093 in btree_lookup_inner (rq=rq@entry=0x7f743efe2490, 
     diskpos=<optimized out>, current=current@entry=0, end=1)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_read.cc:76
 #12 0x00007f7485cd54b1 in btree_lookup (rq=rq@entry=0x7f743efe2490, 
     root_pointer=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_read.cc:162
 #13 0x00007f7485cec3d2 in compact_seq_tree (ctx=0x7f743efe2510, 
     target=0x7f74741e7a60, source=0x7f74741e7b00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/db_compact.cc:416
 #14 cb::couchstore::compact(Db&, char const*, unsigned long, std::function<int (Db&, DocInfo*, sized_buf)>, std::function<int (DocInfo*&, sized_buf)>, FileOpsInterface*, std::function<couchstore_error_t (Db&)>) (source=..., 
     target_filename=<optimized out>, flags=flags@entry=251658242, 
     filterCallback=..., rewriteDocInfoCallback=..., 
     ops=ops@entry=0x7f74747d2560, precommitHook=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/db_compact.cc:183
 #15 0x00007f7486498c4e in CouchKVStore::compactDBInternal (
     this=this@entry=0x7f74746c0a00, sourceDb=..., compact_file=..., 
     vbLock=..., hook_ctx=0x7f747417ae90)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1381
 #16 0x00007f748649bbf4 in CouchKVStore::compactDB (this=0x7f74746c0a00, 
     vbLock=..., hook_ctx=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1074
 #17 0x00007f7486370dfe in EPBucket::compactInternal (
     this=this@entry=0x7f747469a000, vb=..., config=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:1203
 #18 0x00007f74863710c1 in EPBucket::doCompact (this=0x7f747469a000, vbid=..., 
     config=..., cookies=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:1247
 #19 0x00007f7486429f80 in CompactTask::run (this=0x7f74740c8cf0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/tasks.cc:90
 #20 0x00007f74863d21b3 in GlobalTask::execute (this=0x7f74740c8cf0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:75
 #21 0x00007f74863cbd02 in operator() (__closure=0x7f743efe4040)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
 #22 folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
 #23 0x00007f748654ce76 in operator() (this=0x7f743efe4040)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
 #24 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (
     this=this@entry=0x7f747cb2c400, thread=..., 
     task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
 #25 0x00007f748653536a in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
 #26 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #27 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #28 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #29 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #30 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #31 0x00007f74863ca488 in operator() (this=0x7f7480bf80c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #32 operator() (__closure=0x7f7480bf80c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #33 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #34 0x00007f74863ca363 in operator() (this=0x7f7480940550)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #35 operator() (__closure=0x7f7480940540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #36 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #37 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7480697830)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #38 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #39 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 7 (Thread 0x7f743e7fc700 (LWP 47375)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda018)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda018, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda018, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f74600024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f74600024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7480bf8100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7480bf8100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f74809405a0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f7480940590)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f74806978a0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 6 (Thread 0x7f743dffb700 (LWP 47376)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda078)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda078, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda078, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f74600024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f74600024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb2c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7480bf8180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7480bf8180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f74809405f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f74809405e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7480697910)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 5 (Thread 0x7f743d7fa700 (LWP 47377)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda138)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda138, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda138, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f74600033c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f74600033c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460003380, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb5b000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7480bf8240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7480bf8240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f7480940690)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f7480940680)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7480697980)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 4 (Thread 0x7f743cff9700 (LWP 47378)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda030)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda030, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda030, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f7460003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f7460003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb5bc00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7480bf8340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7480bf8340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f7480940780)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f7480940770)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f74806979f0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 3 (Thread 0x7f741bfff700 (LWP 47379)):
 #0  0x00007f7481f27bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f748652fd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f7486536f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f744dfda150)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f744dfda150, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f748653c9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f744dfda150, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f748653cf06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f7460003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f7486540660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f7460003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f7460003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f74865352f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f747cb5bc00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f74863ca488 in operator() (this=0x7f7480bf8380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f7480bf8380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f74863ca363 in operator() (this=0x7f74809407d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f74809407c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7480697a60)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 2 (Thread 0x7f741b7fe700 (LWP 47380)):
 #0  0x00007f7481f2deb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f7483a9f3c5 in epoll_dispatch (base=0x7f747cb9d000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f7483a96376 in event_base_loop (base=0x7f747cb9d000, flags=1)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00007f7486555357 in folly::EventBase::loopBody (
     this=this@entry=0x7f747cb47780, flags=flags@entry=0, 
     ignoreKeepAlive=ignoreKeepAlive@entry=false)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
 #4  0x00007f7486555826 in folly::EventBase::loop (
     this=this@entry=0x7f747cb47780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
 #5  0x00007f74865571e6 in folly::EventBase::loopForever (this=0x7f747cb47780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
 #6  0x00007f74865446b9 in folly::IOThreadPoolExecutor::threadRun (
     this=0x7f747cb10780, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/IOThreadPoolExecutor.cpp:195
 #7  0x00007f748654ff99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #8  __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #10 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #11 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #12 0x00007f74829ebdcf in std::execute_native_thread_routine (
     __p=0x7f7480697ad0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007f7482204ea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007f7481f2d8dd in clone () from /lib64/libc.so.6
 
 Thread 1 (Thread 0x7f7487367400 (LWP 47338)):
 #0  0x00007f7481f2deb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f7483a9f3c5 in epoll_dispatch (base=0x7f7481823000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f7483a96376 in event_base_loop (base=0x7f7481823000, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00000000004277a2 in memcached_main (argc=<optimized out>, 
     argv=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/memcached.cc:1535
 #4  0x00007f7481e51555 in __libc_start_main () from /lib64/libc.so.6
 #5  0x000000000041fb75 in _start ()
 Detaching from program: /opt/couchbase/bin/memcached, process 47338
 [Inferior 1 (process 47338) detached]

2021-02-08 01:06:12,957 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.120.170: No 'sanitizers.log.*' files found
2021-02-08 01:06:13,434 | test  | DEBUG   | MainThread | [basetestcase:check_coredump_exist:720] 172.23.121.115: No crash files found
2021-02-08 01:06:13,598 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.115: No 'sanitizers.log.*' files found
2021-02-08 01:06:14,068 | test  | DEBUG   | MainThread | [basetestcase:check_coredump_exist:720] 172.23.121.116: No crash files found
2021-02-08 01:06:14,207 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.116: No 'sanitizers.log.*' files found
2021-02-08 01:06:14,694 | test  | DEBUG   | MainThread | [basetestcase:check_coredump_exist:720] 172.23.121.123: No crash files found
2021-02-08 01:06:14,838 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.123: No 'sanitizers.log.*' files found
2021-02-08 01:06:15,325 | test  | DEBUG   | MainThread | [basetestcase:check_coredump_exist:720] 172.23.121.124: No crash files found
2021-02-08 01:06:15,459 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.124: No 'sanitizers.log.*' files found
2021-02-08 01:06:15,934 | test  | DEBUG   | MainThread | [basetestcase:check_coredump_exist:720] 172.23.121.126: No crash files found
2021-02-08 01:06:16,068 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.126: No 'sanitizers.log.*' files found
2021-02-08 01:06:16,585 | test  | DEBUG   | MainThread | [basetestcase:check_coredump_exist:720] 172.23.121.127: No crash files found
2021-02-08 01:06:16,720 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.127: No 'sanitizers.log.*' files found
2021-02-08 01:06:17,184 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:711] 172.23.121.128: 1 core dump seen
2021-02-08 01:06:26,348 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:712] 172.23.121.128: Stack Trace of first crash - c56d94e9-421f-4df3-acac7aaa-257e205c.dmp
Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'.
 #0  0x00007f7e3ee27387 in raise () from /lib64/libc.so.6
 #0  0x00007f7e3ee27387 in raise () from /lib64/libc.so.6
 No symbol table info available.
 #1  0x00007f7e3ee28a78 in abort () from /lib64/libc.so.6
 No symbol table info available.
 #2  0x00007f7e3f985195 in __gnu_cxx::__verbose_terminate_handler () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/vterminate.cc:95
         terminating = false
         t = <optimized out>
 #3  0x0000000000555bf2 in backtrace_terminate_handler () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:86
 No locals.
 #4  0x00007f7e3f982f86 in __cxxabiv1::__terminate (handler=<optimized out>) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:47
 No locals.
 #5  0x00007f7e3f982fd1 in std::terminate () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:57
 No locals.
 #6  0x00007f7e433941d3 in GlobalTask::execute (this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:78
 No locals.
 #7  0x00007f7e4338dd02 in operator() (__closure=0x7f7dbf7e5040) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
         executedAt = <optimized out>
         end = <optimized out>
         scheduleOverhead = <optimized out>
         start = {__d = {__r = 953289748860684}}
         runAgain = false
         proxy = @0x7f7e300c8ce0: <error reading variable>
 #8  folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
         fn = @0x7f7dbf7e5040: {__proxy = @0x7f7e300c8ce0}
 #9  0x00007f7e4350ee76 in operator() (this=0x7f7dbf7e5040) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
         fn = @0x7f7dbf7e5040: {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x7f7e300c8ce0, tiny = {__data = "\340\214\f0~\177\000\000\000\000\000\000\000\000\000\000p\204I=~\177\000\000\200,\000\340}\177\000\000\001\000\000\000\000\000\000\000\220P~\277}\177\000", __align = {<No data fields>}}}, call_ = 0x7f7e4338dc40 <folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&)>, exec_ = 0x7f7e4338b650 <folly::detail::function::execSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Op, folly::detail::function::Data*, folly::detail::function::Data)>}
 #10 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=0x7f7e3004f400, thread=..., task=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
         rctx = {prev_ = {<std::__shared_ptr<folly::RequestContext, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<folly::RequestContext, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x0, _M_refcount = {_M_pi = 0x0}}, <No data fields>}}
         startTime = {__d = {__r = 953289748857213}}
         stats = {expired = false, waitTime = {__r = 34658085}, runTime = {__r = 0}, enqueueTime = {__d = {__r = 953289714199128}}, requestId = 0}
 #11 0x00007f7e434f736a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f7e3004f400, thread=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
         guard = {list_ = {forbid = true, prev = 0x0, curr = {name = {static npos = <optimized out>, b_ = 0x7f7e4357705b "CPUThreadPoolExecutor", e_ = 0x7f7e43577070 ""}}}}
 #12 0x00007f7e43511f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 No locals.
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 No locals.
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
 No locals.
 #15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
 No locals.
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
         fn = <optimized out>
 #17 0x00007f7e4338c488 in operator() (this=0x7f7e399dd880) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7f7e399dd880: <error reading variable>
 #18 operator() (__closure=0x7f7e399dd880) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
         threadNameOpt = {storage_ = {{emptyState = -112 '\220', value = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7f7dbf7e5190 "WriterPool2"}, _M_string_length = 11, {_M_local_buf = "WriterPool2\000\000\000\000", _M_allocated_capacity = 8021036716417184343}}}, hasValue = true}}
         func = <error reading variable func (Cannot access memory at address 0x7f7e399dd880)>
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7f7e399dd880: <error reading variable>
 #20 0x00007f7e4338c363 in operator() (this=0x7f7e39a09ae0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7f7e39a09ae0: <error reading variable>
 #21 operator() (__closure=0x7f7e39a09ad0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
         func = <error reading variable func (Cannot access memory at address 0x7f7e39a09ae0)>
         priority = <error reading variable priority (Cannot access memory at address 0x7f7e39a09ad0)>
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7f7e39a09ad0: <error reading variable>
 #23 0x00007f7e3f9addcf in std::execute_native_thread_routine (__p=0x7f7e3d498080) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
         __t = {_M_t = {_M_t = {<std::_Tuple_impl<0, std::thread::_State*, std::default_delete<std::thread::_State> >> = {<std::_Tuple_impl<1, std::default_delete<std::thread::_State> >> = {<std::_Head_base<1, std::default_delete<std::thread::_State>, true>> = {<std::default_delete<std::thread::_State>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, std::thread::_State*, false>> = {_M_head_impl = 0x7f7e3d498080}, <No data fields>}, <No data fields>}}}
 #24 0x00007f7e3f1c6ea5 in start_thread () from /lib64/libpthread.so.0
 No symbol table info available.
 #25 0x00007f7e3eeef8dd in clone () from /lib64/libc.so.6
 No symbol table info available.

[Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib64/libthread_db.so.1".
 Loaded symbols for /lib64/libpthread.so.0
 Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib64/libc.so.6
 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
 Loaded symbols for /lib64/ld-linux-x86-64.so.2
 Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done.
 Loaded symbols for /lib64/librt.so.1
 0x00007f4261279eb3 in epoll_wait () from /lib64/libc.so.6
 
 Thread 41 (Thread 0x7f42605ff700 (LWP 17007)):
 #0  0x00007f4261554de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f42630245a7 in background_thread_sleep (tsdn=<optimized out>, 
     interval=10000000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=0, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_thread0_work (tsd=0x7f42605e6a60)
     at src/background_thread.c:452
 #4  background_work (ind=<optimized out>, tsd=0x7f42605e6a60)
     at src/background_thread.c:490
 #5  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #6  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 40 (Thread 0x7f425f87e700 (LWP 17008)):
 #0  0x00007f4261554de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4264a4c8cd in __gthread_cond_timedwait (
     __abs_timeout=0x7f425f864fa0, __mutex=<optimized out>, 
     __cond=0x7f4260a2e138)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f4260a2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7f4260a2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __atime=..., __lock=..., this=0x7f4260a2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1, 1000>, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __rtime=<synthetic pointer>, __lock=..., 
     this=0x7f4260a2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  dequeue_for (wait_duration=..., popped_item=..., this=0x7f4260a2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/mpmc_blocking_q.h:61
 #7  spdlog::details::thread_pool::process_next_msg_ (
     this=this@entry=0x7f4260a2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:193
 #8  0x00007f4264a4ce20 in spdlog::details::thread_pool::worker_loop_ (
     this=0x7f4260a2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:184
 #9  0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f4260a58c40)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #10 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 39 (Thread 0x7f425f07d700 (LWP 17009)):
 #0  0x00007f4261554de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4264a4bf8a in __gthread_cond_timedwait (
     __abs_timeout=0x7f425f0641f0, __mutex=<optimized out>, 
     __cond=<optimized out>)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> >
     (__p=..., __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1>, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__p=..., __rtime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  operator() (__closure=0x7f4260bffa08)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/periodic_worker.h:38
 #7  __invoke_impl<void, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (
     __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:60
 #8  __invoke<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  _M_invoke<0> (this=0x7f4260bffa08)
     at /usr/local/include/c++/7.3.0/thread:234
 #10 operator() (this=0x7f4260bffa08)
     at /usr/local/include/c++/7.3.0/thread:243
 #11 _ZNSt6thread11_State_implINS_8_InvokerISt5tupleIJZN6spdlog7details15periodic_workerC4ERKSt8functionIFvvEENSt6chrono8durationIlSt5ratioILl1ELl1EEEEEUlvE_EEEEE6_M_runEv (this=0x7f4260bffa00) at /usr/local/include/c++/7.3.0/thread:186
 #12 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f4260bffa00)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 38 (Thread 0x7f425e87c700 (LWP 17010)):
 #0  0x00007f426126ec3d in poll () from /lib64/libc.so.6
 #1  0x000000000046a0de in get_command (buffsize=80, buffer=0x7f425e8631d0 "")
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:49
 #2  check_stdin_thread (arg=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:90
 #3  0x00007f4263d132d7 in run (this=0x7f4260a59c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #4  platform_thread_wrap (arg=0x7f4260a59c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #5  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 37 (Thread 0x7f425e07b700 (LWP 17011)):
 #0  0x00007f4261554a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f42652e9bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x9f9240, ctx=0x9f7d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x9f8950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x9f8950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 36 (Thread 0x7f425d87a700 (LWP 17012)):
 #0  0x00007f4261554a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f42652e9bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x9f9c28, ctx=0x9f7d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x9f9338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x9f9338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 35 (Thread 0x7f425d079700 (LWP 17013)):
 #0  0x00007f426126ec3d in poll () from /lib64/libc.so.6
 #1  0x00007f42652e0ba8 in master_thread_run (ctx=0x9f7d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19148
 #2  master_thread (thread_func_param=0x9f7d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19243
 #3  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #4  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 34 (Thread 0x7f425c878700 (LWP 17014)):
 #0  0x00007f4261554de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004917e0 in __gthread_cond_timedwait (
     __abs_timeout=0x7f425c85f1d0, __mutex=<optimized out>, 
     __cond=0x7f4260a2f0f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=<synthetic pointer>, this=0x7f4260a2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=<synthetic pointer>, this=0x7f4260a2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=<synthetic pointer>, 
     __lock=<synthetic pointer>, this=0x7f4260a2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  ExternalAuthManagerThread::run (this=0x7f4260a2f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/external_auth_manager_thread.cc:229
 #6  0x00007f4263d1e20f in Couchbase::Thread::thread_entry (
     this=0x7f4260a2f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #7  0x00007f4263d132d7 in run (this=0x7f4260a5a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #8  platform_thread_wrap (arg=0x7f4260a5a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #9  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #10 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 33 (Thread 0x7f4257c7f700 (LWP 17015)):
 #0  0x00007f4261554de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004efcb6 in __gthread_cond_timedwait (
     __abs_timeout=0x7f4257c661f0, __mutex=<optimized out>, 
     __cond=0x7f425f88e8f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f425f88e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7f425f88e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1> > (__rtime=..., __lock=..., 
     this=0x7f425f88e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  AuditImpl::consume_events (this=0x7f425f88e500)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/auditd/src/audit.cc:414
 #6  0x00007f4263d132d7 in run (this=0x7f4260a5a4a0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #7  platform_thread_wrap (arg=0x7f4260a5a4a0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #8  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #9  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 32 (Thread 0x7f425747e700 (LWP 17016)):
 #0  0x00007f4261279eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4262deb3c5 in epoll_dispatch (base=0x7f4260a40300, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4262de2376 in event_base_loop (base=0x7f4260a40300, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f425fb4b000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4263d132d7 in run (this=0x7f4257cea790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4257cea790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 31 (Thread 0x7f4256c7d700 (LWP 17017)):
 #0  0x00007f4261279eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4262deb3c5 in epoll_dispatch (base=0x7f4260a40600, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4262de2376 in event_base_loop (base=0x7f4260a40600, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f425fb4baa8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4263d132d7 in run (this=0x7f4257cea7c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4257cea7c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 30 (Thread 0x7f425647c700 (LWP 17018)):
 #0  0x00007f4261279eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4262deb3c5 in epoll_dispatch (base=0x7f4260a40900, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4262de2376 in event_base_loop (base=0x7f4260a40900, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f425fb4c550)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4263d132d7 in run (this=0x7f4257cea730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4257cea730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 29 (Thread 0x7f4255c7b700 (LWP 17019)):
 #0  0x00007f4261279eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4262deb3c5 in epoll_dispatch (base=0x7f4260a40c00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4262de2376 in event_base_loop (base=0x7f4260a40c00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f425fb4cff8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4263d132d7 in run (this=0x7f4257cea850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4257cea850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 28 (Thread 0x7f425547a700 (LWP 17020)):
 #0  0x00007f4261279eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4262deb3c5 in epoll_dispatch (base=0x7f4260a40f00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4262de2376 in event_base_loop (base=0x7f4260a40f00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f425fb4daa0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4263d132d7 in run (this=0x7f4257cea6d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4257cea6d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 27 (Thread 0x7f4254c79700 (LWP 17021)):
 #0  0x00007f4261279eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4262deb3c5 in epoll_dispatch (base=0x7f4260a41200, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4262de2376 in event_base_loop (base=0x7f4260a41200, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f425fb4e548)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4263d132d7 in run (this=0x7f4257cea8b0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4257cea8b0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 26 (Thread 0x7f424ffff700 (LWP 17022)):
 #0  0x00007f4261279eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4262deb3c5 in epoll_dispatch (base=0x7f4260a41500, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4262de2376 in event_base_loop (base=0x7f4260a41500, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f425fb4eff0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4263d132d7 in run (this=0x7f4257cea8e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4257cea8e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 25 (Thread 0x7f424f7fe700 (LWP 17023)):
 #0  0x00007f4261554a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4261d321bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4257df3158)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4257df3158, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4257df3000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4263d1e20f in Couchbase::Thread::thread_entry (
     this=0x7f4257df3000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4263d132d7 in run (this=0x7f4257cea6a0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4257cea6a0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 24 (Thread 0x7f424effd700 (LWP 17024)):
 #0  0x00007f4261554a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4261d321bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4257df3318)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4257df3318, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4257df31c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4263d1e20f in Couchbase::Thread::thread_entry (
     this=0x7f4257df31c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4263d132d7 in run (this=0x7f4257cea880)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4257cea880)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 23 (Thread 0x7f424e7fc700 (LWP 17025)):
 #0  0x00007f4261554a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4261d321bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4257df34d8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4257df34d8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4257df3380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4263d1e20f in Couchbase::Thread::thread_entry (
     this=0x7f4257df3380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4263d132d7 in run (this=0x7f4257cea970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4257cea970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 22 (Thread 0x7f424dffb700 (LWP 17026)):
 #0  0x00007f4261554a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4261d321bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4257df3698)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4257df3698, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4257df3540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4263d1e20f in Couchbase::Thread::thread_entry (
     this=0x7f4257df3540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4263d132d7 in run (this=0x7f4257cea820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4257cea820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 21 (Thread 0x7f424d7fa700 (LWP 17027)):
 #0  0x00007f4261554a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4261d321bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4257df3858)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4257df3858, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4257df3700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4263d1e20f in Couchbase::Thread::thread_entry (
     this=0x7f4257df3700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4263d132d7 in run (this=0x7f4257cea9d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4257cea9d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 20 (Thread 0x7f424cff9700 (LWP 17028)):
 #0  0x00007f4261554a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4261d321bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4257df3a18)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4257df3a18, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4257df38c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4263d1e20f in Couchbase::Thread::thread_entry (
     this=0x7f4257df38c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4263d132d7 in run (this=0x7f4257ceaa00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4257ceaa00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 19 (Thread 0x7f424c7f8700 (LWP 17029)):
 #0  0x00007f4261554a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4261d321bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4257df3bd8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4257df3bd8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4257df3a80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4263d1e20f in Couchbase::Thread::thread_entry (
     this=0x7f4257df3a80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4263d132d7 in run (this=0x7f4257cea7f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4257cea7f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 18 (Thread 0x7f4249df6700 (LWP 17032)):
 #0  0x00007f4261554de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4263023e51 in background_thread_sleep (tsdn=<optimized out>, 
     interval=10000000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=<optimized out>, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_work (ind=<optimized out>, tsd=0x7f4249ddda60)
     at src/background_thread.c:497
 #4  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #5  0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 17 (Thread 0x7f42495f5700 (LWP 17033)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd8150)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd8150, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f426588889d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, 
     idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
 #6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd8150, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #7  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4208000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4208000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #11 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #15 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #17 0x00007f4265716488 in operator() (this=0x7f4257fb7680)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #18 operator() (__closure=0x7f4257fb7680)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007f4265716363 in operator() (this=0x7f4257d62850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #21 operator() (__closure=0x7f4257d62840)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #23 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d6f40)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #24 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #25 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 16 (Thread 0x7f4248df4700 (LWP 17034)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd8018)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd8018, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f426588889d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, 
     idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
 #6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd8018, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #7  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4208000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4208000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #11 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #15 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #17 0x00007f4265716488 in operator() (this=0x7f4257fb7780)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #18 operator() (__closure=0x7f4257fb7780)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007f4265716363 in operator() (this=0x7f4257d628f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #21 operator() (__closure=0x7f4257d628e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #23 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d6fb0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #24 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #25 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 15 (Thread 0x7f4243fff700 (LWP 17035)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd81f8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd81f8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f426588889d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, 
     idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
 #6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd81f8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #7  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4208000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4208000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #11 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #15 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #17 0x00007f4265716488 in operator() (this=0x7f4257fb77c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #18 operator() (__closure=0x7f4257fb77c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007f4265716363 in operator() (this=0x7f4257d62940)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #21 operator() (__closure=0x7f4257d62930)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #23 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d7020)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #24 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #25 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 14 (Thread 0x7f42437fe700 (LWP 17036)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd8270)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd8270, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f426588889d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, 
     idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
 #6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd8270, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #7  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4208000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4208000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #11 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #15 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #17 0x00007f4265716488 in operator() (this=0x7f4257fb7840)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #18 operator() (__closure=0x7f4257fb7840)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007f4265716363 in operator() (this=0x7f4257d629e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #21 operator() (__closure=0x7f4257d629d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #23 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d7090)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #24 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #25 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 13 (Thread 0x7f4242ffd700 (LWP 17037)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd82b8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd82b8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f426588889d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, 
     idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
 #6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd82b8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #7  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4208000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4208000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #11 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #15 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #17 0x00007f4265716488 in operator() (this=0x7f4257fb7880)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #18 operator() (__closure=0x7f4257fb7880)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007f4265716363 in operator() (this=0x7f4257d62b20)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #21 operator() (__closure=0x7f4257d62b10)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #23 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d7480)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #24 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #25 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 12 (Thread 0x7f4240fd7700 (LWP 17038)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd82d0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd82d0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f426588889d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, 
     idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
 #6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd82d0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #7  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4208000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4208000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #11 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #15 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #17 0x00007f4265716488 in operator() (this=0x7f4257fb7800)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #18 operator() (__closure=0x7f4257fb7800)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007f4265716363 in operator() (this=0x7f4257d62b70)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #21 operator() (__closure=0x7f4257d62b60)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #23 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d74f0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #24 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #25 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 11 (Thread 0x7f41f3fff700 (LWP 17039)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd82a0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd82a0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f426588889d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, 
     idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
 #6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd82a0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #7  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4208000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4208000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #11 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #15 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #17 0x00007f4265716488 in operator() (this=0x7f4257fb78c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #18 operator() (__closure=0x7f4257fb78c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007f4265716363 in operator() (this=0x7f4257d62c60)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #21 operator() (__closure=0x7f4257d62c50)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #23 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d7560)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #24 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #25 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 10 (Thread 0x7f41f37fe700 (LWP 17040)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd8240)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd8240, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f426588889d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, 
     idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
 #6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd8240, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #7  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4208000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4208000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #11 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #15 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #17 0x00007f4265716488 in operator() (this=0x7f4257fb7900)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #18 operator() (__closure=0x7f4257fb7900)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007f4265716363 in operator() (this=0x7f4257d62cb0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #21 operator() (__closure=0x7f4257d62ca0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #23 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d75d0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #24 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #25 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 9 (Thread 0x7f41f2ffd700 (LWP 17041)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd85d0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd85d0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f42658889d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd85d0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f42080024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f42080024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0c00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4265716488 in operator() (this=0x7f4257fb7a40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4257fb7a40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4265716363 in operator() (this=0x7f4257d637a0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4257d63790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d7640)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 8 (Thread 0x7f41f27fc700 (LWP 17042)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd80f0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd80f0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f42658889d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd80f0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f42080024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f42080024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0c00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4265716488 in operator() (this=0x7f4257fb7a80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4257fb7a80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4265716363 in operator() (this=0x7f4257d637f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4257d637e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d76b0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 7 (Thread 0x7f41f1ffb700 (LWP 17043)):
 #0  0x00007f426126aa1d in write () from /lib64/libc.so.6
 #1  0x00007f42611f5263 in _IO_new_file_write () from /lib64/libc.so.6
 #2  0x00007f42611f6a7e in __GI__IO_do_write () from /lib64/libc.so.6
 #3  0x00007f42611f59c0 in __GI__IO_file_xsputn () from /lib64/libc.so.6
 #4  0x00007f42611ea752 in fwrite () from /lib64/libc.so.6
 #5  0x00007f42650469ba in write_id_record (out=0x7f41d0000fb0, 
     ptr=0x7f41a7207690, ctx=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/tree_writer.cc:246
 #6  0x00007f4265042d8e in merge_sort (unsorted_file=0x7f41d0000d70, 
     sorted_file=0x7f41d0000d70, 
     tmp_path=0x7f41f1fe0580 "/data/kv/GleamBook/779.couch.15.compact.btree-tmp_3", read=read@entry=0x7f4265046890 <read_id_record(FILE*, void*, void*)>, 
     write=write@entry=0x7f4265046980 <write_id_record(FILE*, void*, void*)>, 
     compare=compare@entry=0x7f4265046810 <compare_id_record(void const*, void const*, void*)>, record_alloc=0x7f4265046840 <alloc_record()>, 
     record_duplicate=0x7f4265046850 <duplicate_record(char*)>, 
     record_free=0x7f4265046830 <free_record(char*)>, pointer=0x7f4248190000, 
     block_size=512000, pcount=0x0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/mergesort.cc:188
 #7  0x00007f4265046c80 in TreeWriterSort (writer=0x7f4248190000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/tree_writer.cc:118
 #8  0x00007f4265038451 in cb::couchstore::compact(Db&, char const*, unsigned long, std::function<int (Db&, DocInfo*, sized_buf)>, std::function<int (DocInfo*&, sized_buf)>, FileOpsInterface*, std::function<couchstore_error_t (Db&)>) (
     source=..., target_filename=<optimized out>, flags=flags@entry=251658242, 
     filterCallback=..., rewriteDocInfoCallback=..., 
     ops=ops@entry=0x7f4249f7ef80, precommitHook=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/db_compact.cc:188
 #9  0x00007f42657e4c4e in CouchKVStore::compactDBInternal (
     this=this@entry=0x7f4249ebea00, sourceDb=..., compact_file=..., 
     vbLock=..., hook_ctx=0x7f42485b5e10)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1381
 #10 0x00007f42657e7bf4 in CouchKVStore::compactDB (this=0x7f4249ebea00, 
     vbLock=..., hook_ctx=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1074
 #11 0x00007f42656bcdfe in EPBucket::compactInternal (
     this=this@entry=0x7f4249e98000, vb=..., config=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:1203
 #12 0x00007f42656bd0c1 in EPBucket::doCompact (this=0x7f4249e98000, vbid=..., 
     config=..., cookies=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:1247
 #13 0x00007f4265775f80 in CompactTask::run (this=0x7f42480c3ed0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/tasks.cc:90
 #14 0x00007f426571e1b3 in GlobalTask::execute (this=0x7f42480c3ed0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:75
 #15 0x00007f4265717d02 in operator() (__closure=0x7f41f1fe2040)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
 #16 folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
 #17 0x00007f4265898e76 in operator() (this=0x7f41f1fe2040)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
 #18 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (
     this=this@entry=0x7f424aaa0c00, thread=..., 
     task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
 #19 0x00007f426588136a in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0c00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
 #20 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #21 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #22 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #23 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #24 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #25 0x00007f4265716488 in operator() (this=0x7f4257fb7ac0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #26 operator() (__closure=0x7f4257fb7ac0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #27 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #28 0x00007f4265716363 in operator() (this=0x7f4257d63840)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #29 operator() (__closure=0x7f4257d63830)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #30 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #31 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d7720)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #32 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #33 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 6 (Thread 0x7f41f17fa700 (LWP 17044)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd85a0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd85a0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f42658889d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd85a0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f42080024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f42080024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa0c00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4265716488 in operator() (this=0x7f4257fb7b40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4257fb7b40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4265716363 in operator() (this=0x7f4257d63890)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4257d63880)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d7790)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 5 (Thread 0x7f41f0ff9700 (LWP 17045)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd86a8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd86a8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f42658889d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd86a8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f42080033c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f42080033c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208003380, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa1800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4265716488 in operator() (this=0x7f4257fb7c00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4257fb7c00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4265716363 in operator() (this=0x7f4257d63930)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4257d63920)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d7b80)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 4 (Thread 0x7f41cffff700 (LWP 17046)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd8750)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd8750, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f42658889d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd8750, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4208003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4208003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa2400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4265716488 in operator() (this=0x7f4257fb7d00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4257fb7d00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4265716363 in operator() (this=0x7f4257d63fc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4257d63fb0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d7bf0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 3 (Thread 0x7f41cf7fe700 (LWP 17047)):
 #0  0x00007f4261273bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f426587bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4265882f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4240fd8720)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4240fd8720, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f42658889d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4240fd8720, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4265888f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4208003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f426588c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4208003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4208003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f42658812f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f424aaa2400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4265716488 in operator() (this=0x7f4257fb7d40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4257fb7d40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4265716363 in operator() (this=0x7f4257d86010)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4257d86000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d7c60)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 2 (Thread 0x7f41ceffd700 (LWP 17048)):
 #0  0x00007f4261279eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4262deb3c5 in epoll_dispatch (base=0x7f424ab8d500, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4262de2376 in event_base_loop (base=0x7f424ab8d500, flags=1)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00007f42658a1357 in folly::EventBase::loopBody (
     this=this@entry=0x7f4257ecb000, flags=flags@entry=0, 
     ignoreKeepAlive=ignoreKeepAlive@entry=false)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
 #4  0x00007f42658a1826 in folly::EventBase::loop (
     this=this@entry=0x7f4257ecb000)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
 #5  0x00007f42658a31e6 in folly::EventBase::loopForever (this=0x7f4257ecb000)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
 #6  0x00007f42658906b9 in folly::IOThreadPoolExecutor::threadRun (
     this=0x7f424aa54c80, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/IOThreadPoolExecutor.cpp:195
 #7  0x00007f426589bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #8  __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #10 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #11 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #12 0x00007f4261d37dcf in std::execute_native_thread_routine (
     __p=0x7f424a9d7cd0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007f4261550ea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007f42612798dd in clone () from /lib64/libc.so.6
 
 Thread 1 (Thread 0x7f42666b3400 (LWP 17006)):
 #0  0x00007f4261279eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4262deb3c5 in epoll_dispatch (base=0x7f4260a40000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4262de2376 in event_base_loop (base=0x7f4260a40000, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00000000004277a2 in memcached_main (argc=<optimized out>, 
     argv=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/memcached.cc:1535
 #4  0x00007f426119d555 in __libc_start_main () from /lib64/libc.so.6
 #5  0x000000000041fb75 in _start ()
 Detaching from program: /opt/couchbase/bin/memcached, process 17006
 [Inferior 1 (process 17006) detached]

2021-02-08 01:06:36,765 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.128: No 'sanitizers.log.*' files found
2021-02-08 01:06:37,464 | test  | DEBUG   | MainThread | [basetestcase:check_coredump_exist:720] 172.23.121.129: No crash files found
2021-02-08 01:06:37,605 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.129: No 'sanitizers.log.*' files found
2021-02-08 01:06:39,151 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:711] 172.23.121.130: 2 core dump seen
Traceback (most recent call last):
  File "/opt/jython/Lib/logging/__init__.py", line 853, in emit
    msg = self.format(record)
  File "/opt/jython/Lib/logging/__init__.py", line 726, in format
    return fmt.format(record)
  File "/opt/jython/Lib/logging/__init__.py", line 469, in format
    s = self._fmt % record.__dict__
UnicodeDecodeError: 'ascii' codec can't decode byte 0xcc in position 2389: ordinal not in range(128)
Logged from file basetestcase.py, line 712
Traceback (most recent call last):
  File "/opt/jython/Lib/logging/__init__.py", line 853, in emit
    msg = self.format(record)
  File "/opt/jython/Lib/logging/__init__.py", line 726, in format
    return fmt.format(record)
  File "/opt/jython/Lib/logging/__init__.py", line 469, in format
    s = self._fmt % record.__dict__
UnicodeDecodeError: 'ascii' codec can't decode byte 0xcc in position 2389: ordinal not in range(128)
Logged from file basetestcase.py, line 712
[Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib64/libthread_db.so.1".
 Loaded symbols for /lib64/libpthread.so.0
 Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib64/libc.so.6
 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
 Loaded symbols for /lib64/ld-linux-x86-64.so.2
 Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done.
 Loaded symbols for /lib64/librt.so.1
 0x00007ff60ddc1eb3 in epoll_wait () from /lib64/libc.so.6
 
 Thread 41 (Thread 0x7ff60d1ff700 (LWP 10906)):
 #0  0x00007ff60e09cde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff60fb6c5a7 in background_thread_sleep (tsdn=<optimized out>, 
     interval=10000000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=0, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_thread0_work (tsd=0x7ff60d1e6a60)
     at src/background_thread.c:452
 #4  background_work (ind=<optimized out>, tsd=0x7ff60d1e6a60)
     at src/background_thread.c:490
 #5  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #6  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 40 (Thread 0x7ff60c47e700 (LWP 10907)):
 #0  0x00007ff60e09cde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff6115948cd in __gthread_cond_timedwait (
     __abs_timeout=0x7ff60c464fa0, __mutex=<optimized out>, 
     __cond=0x7ff60d62e138)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7ff60d62e138)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7ff60d62e138)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __atime=..., __lock=..., this=0x7ff60d62e138)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1, 1000>, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __rtime=<synthetic pointer>, __lock=..., 
     this=0x7ff60d62e138)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  dequeue_for (wait_duration=..., popped_item=..., this=0x7ff60d62e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/mpmc_blocking_q.h:61
 #7  spdlog::details::thread_pool::process_next_msg_ (
     this=this@entry=0x7ff60d62e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:193
 #8  0x00007ff611594e20 in spdlog::details::thread_pool::worker_loop_ (
     this=0x7ff60d62e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:184
 #9  0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff60d658c40)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #10 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 39 (Thread 0x7ff60bc7d700 (LWP 10908)):
 #0  0x00007ff60e09cde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff611593f8a in __gthread_cond_timedwait (
     __abs_timeout=0x7ff60bc641f0, __mutex=<optimized out>, 
     __cond=<optimized out>)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> >
     (__p=..., __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1>, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__p=..., __rtime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  operator() (__closure=0x7ff60d7ffa08)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/periodic_worker.h:38
 #7  __invoke_impl<void, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (
     __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:60
 #8  __invoke<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  _M_invoke<0> (this=0x7ff60d7ffa08)
     at /usr/local/include/c++/7.3.0/thread:234
 #10 operator() (this=0x7ff60d7ffa08)
     at /usr/local/include/c++/7.3.0/thread:243
 #11 _ZNSt6thread11_State_implINS_8_InvokerISt5tupleIJZN6spdlog7details15periodic_workerC4ERKSt8functionIFvvEENSt6chrono8durationIlSt5ratioILl1ELl1EEEEEUlvE_EEEEE6_M_runEv (this=0x7ff60d7ffa00) at /usr/local/include/c++/7.3.0/thread:186
 #12 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff60d7ffa00)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 38 (Thread 0x7ff60b47c700 (LWP 10909)):
 #0  0x00007ff60ddb6c3d in poll () from /lib64/libc.so.6
 #1  0x000000000046a0de in get_command (buffsize=80, buffer=0x7ff60b4631d0 "")
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:49
 #2  check_stdin_thread (arg=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:90
 #3  0x00007ff61085b2d7 in run (this=0x7ff60d659c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #4  platform_thread_wrap (arg=0x7ff60d659c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #5  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 37 (Thread 0x7ff60ac7b700 (LWP 10910)):
 #0  0x00007ff60e09ca35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff611e31bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x22e9240, ctx=0x22e7d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x22e8950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x22e8950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 36 (Thread 0x7ff60a47a700 (LWP 10911)):
 #0  0x00007ff60e09ca35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff611e31bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x22e9c28, ctx=0x22e7d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x22e9338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x22e9338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 35 (Thread 0x7ff609c79700 (LWP 10912)):
 #0  0x00007ff60ddb6c3d in poll () from /lib64/libc.so.6
 #1  0x00007ff611e28ba8 in master_thread_run (ctx=0x22e7d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19148
 #2  master_thread (thread_func_param=0x22e7d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19243
 #3  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #4  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 34 (Thread 0x7ff609478700 (LWP 10913)):
 #0  0x00007ff60e09cde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004917e0 in __gthread_cond_timedwait (
     __abs_timeout=0x7ff60945f1d0, __mutex=<optimized out>, 
     __cond=0x7ff60d62f0f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=<synthetic pointer>, this=0x7ff60d62f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=<synthetic pointer>, this=0x7ff60d62f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=<synthetic pointer>, 
     __lock=<synthetic pointer>, this=0x7ff60d62f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  ExternalAuthManagerThread::run (this=0x7ff60d62f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/external_auth_manager_thread.cc:229
 #6  0x00007ff61086620f in Couchbase::Thread::thread_entry (
     this=0x7ff60d62f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #7  0x00007ff61085b2d7 in run (this=0x7ff60d65a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #8  platform_thread_wrap (arg=0x7ff60d65a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #9  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #10 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 33 (Thread 0x7ff6088f7700 (LWP 10914)):
 #0  0x00007ff60e09cde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004efcb6 in __gthread_cond_timedwait (
     __abs_timeout=0x7ff6088de1f0, __mutex=<optimized out>, 
     __cond=0x7ff60c48e8f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7ff60c48e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7ff60c48e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1> > (__rtime=..., __lock=..., 
     this=0x7ff60c48e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  AuditImpl::consume_events (this=0x7ff60c48e500)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/auditd/src/audit.cc:414
 #6  0x00007ff61085b2d7 in run (this=0x7ff60d65a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #7  platform_thread_wrap (arg=0x7ff60d65a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #8  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #9  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 32 (Thread 0x7ff603fff700 (LWP 10915)):
 #0  0x00007ff60ddc1eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007ff60f9333c5 in epoll_dispatch (base=0x7ff60d623300, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007ff60f92a376 in event_base_loop (base=0x7ff60d623300, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7ff60c74c000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007ff61085b2d7 in run (this=0x7ff608962730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7ff608962730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 31 (Thread 0x7ff6037fe700 (LWP 10916)):
 #0  0x00007ff60ddc1eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007ff60f9333c5 in epoll_dispatch (base=0x7ff60d623600, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007ff60f92a376 in event_base_loop (base=0x7ff60d623600, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7ff60c74caa8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007ff61085b2d7 in run (this=0x7ff6089624f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7ff6089624f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 30 (Thread 0x7ff602ffd700 (LWP 10917)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff602fe3c1c)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff602fe3c1c, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123e4bbf in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::Baton<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff602fe3c1c, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/Baton.h:308
 #8  0x00007ff6123e848f in wait (opt=..., this=0x7ff602fe3c1c)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/Baton.h:178
 #9  folly::EventBase::runInEventBaseThreadAndWait(folly::Function<void ()>) (
     this=0x7ff608975780, fn=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:673
 #10 0x00007ff61225a6b2 in FollyExecutorPool::cancel (this=<optimized out>, 
     taskId=<optimized out>, eraseTask=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:939
 #11 0x00007ff6121cf6f2 in DcpProducer::cancelCheckpointCreatorTask (
     this=this@entry=0x7ff572480140)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/producer.cc:261
 #12 0x00007ff6121b853b in DcpConnMap::disconnect (this=0x7ff600080000, 
     cookie=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/dcpconnmap.cc:337
 #13 0x00007ff612216c3f in EventuallyPersistentEngine::disconnect (
     this=0x7ff600000000, cookie=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:6415
 #14 0x0000000000480fef in Connection::propagateDisconnect (
     this=this@entry=0x7ff5e410b300)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:1328
 #15 0x00000000004812b4 in Connection::close (this=this@entry=0x7ff5e410b300)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:1310
 #16 0x0000000000487e47 in Connection::executeCommandsCallback (
     this=0x7ff5e410b300)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:706
 #17 0x000000000048a68d in Connection::event_callback (event=<optimized out>, 
     ctx=0x7ff5e410b300)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:871
 #18 0x00007ff60f920e70 in bufferevent_run_deferred_callbacks_unlocked (
     cb=<optimized out>, arg=0x7ff60893b400)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/bufferevent.c:225
 #19 0x00007ff60f929d01 in event_process_active_single_queue (
     base=base@entry=0x7ff60d623900, 
     max_to_process=max_to_process@entry=2147483647, 
     endtime=endtime@entry=0x0, activeq=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1726
 #20 0x00007ff60f92a54f in event_process_active (base=0x7ff60d623900)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1789
 #21 event_base_loop (base=0x7ff60d623900, flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:2012
 #22 0x000000000046ace9 in worker_libevent (arg=0x7ff60c74d550)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #23 0x00007ff61085b2d7 in run (this=0x7ff6089626d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #24 platform_thread_wrap (arg=0x7ff6089626d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #25 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 29 (Thread 0x7ff6027fc700 (LWP 10918)):
 #0  0x00007ff60ddc1eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007ff60f9333c5 in epoll_dispatch (base=0x7ff60d623c00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007ff60f92a376 in event_base_loop (base=0x7ff60d623c00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7ff60c74dff8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007ff61085b2d7 in run (this=0x7ff6089627f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7ff6089627f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 28 (Thread 0x7ff601ffb700 (LWP 10919)):
 #0  0x00007ff60ddc1eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007ff60f9333c5 in epoll_dispatch (base=0x7ff60d623f00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007ff60f92a376 in event_base_loop (base=0x7ff60d623f00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7ff60c74eaa0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007ff61085b2d7 in run (this=0x7ff608962670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7ff608962670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 27 (Thread 0x7ff6017fa700 (LWP 10920)):
 #0  0x00007ff60ddc1eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007ff60f9333c5 in epoll_dispatch (base=0x7ff60d624200, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007ff60f92a376 in event_base_loop (base=0x7ff60d624200, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7ff60c74f548)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007ff61085b2d7 in run (this=0x7ff608962850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7ff608962850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 26 (Thread 0x7ff600ff9700 (LWP 10921)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff600fdf66c)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff600fdf66c, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123e4bbf in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::Baton<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff600fdf66c, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/Baton.h:308
 #8  0x00007ff6123e848f in wait (opt=..., this=0x7ff600fdf66c)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/Baton.h:178
 #9  folly::EventBase::runInEventBaseThreadAndWait(folly::Function<void ()>) (
     this=this@entry=0x7ff608975780, fn=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:673
 #10 0x00007ff61225a47c in FollyExecutorPool::schedule (this=<optimized out>, 
     task=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:923
 #11 0x00007ff612203c66 in EPBucket::scheduleCompaction (this=0x7ff6000a1000, 
     vbid=..., config=..., cookie=0x7ff5e41b5c80, delay=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:1048
 #12 0x00007ff612203d92 in EPBucket::scheduleCompaction (this=<optimized out>, 
     vbid=..., config=..., cookie=<optimized out>, delay=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:1060
 #13 0x00007ff61222642a in EventuallyPersistentEngine::compactDB(void const*, cb::mcbp::Request const&, std::function<bool (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, unsigned char, cb::mcbp::Status, unsigned long, void const*)> const&) (this=this@entry=0x7ff600000000, 
     cookie=cookie@entry=0x7ff5e41b5c80, req=..., response=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:6537
 #14 0x00007ff612232fe1 in EventuallyPersistentEngine::processUnknownCommandInner(void const*, cb::mcbp::Request const&, std::function<bool (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, unsigned char, cb::mcbp::Status, unsigned long, void const*)> const&) (
     this=this@entry=0x7ff600000000, cookie=cookie@entry=0x7ff5e41b5c80, 
     request=..., response=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:1271
 #15 0x00007ff612233590 in EventuallyPersistentEngine::unknown_command(void const*, cb::mcbp::Request const&, std::function<bool (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, unsigned char, cb::mcbp::Status, unsigned long, void const*)> const&) (this=0x7ff600000000, 
     cookie=0x7ff5e41b5c80, request=..., response=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:1313
 #16 0x000000000044d8e7 in bucket_unknown_command(Cookie&, std::function<bool (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, unsigned char, cb::mcbp::Status, unsigned long, void const*)> const&) (
     cookie=..., response=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/engine_wrapper.cc:34
 #17 0x00000000004a86d5 in process_bin_unknown_packet (cookie=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/mcbp_executors.cc:132
 #18 0x00000000004adfb6 in operator() (__args#0=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/std_function.h:706
 #19 execute_client_request_packet (cookie=..., request=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/mcbp_executors.cc:891
 #20 0x000000000049cd99 in Cookie::execute (this=0x7ff5e41b5c80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/cookie.cc:158
 #21 0x000000000048434d in Connection::executeCommandPipeline (
     this=this@entry=0x7ff5e41de000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:559
 #22 0x0000000000487b85 in Connection::executeCommandsCallback (
     this=this@entry=0x7ff5e41de000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:632
 #23 0x00000000004884cf in Connection::rw_callback (ctx=0x7ff5e41de000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:778
 #24 0x00007ff60f920d8e in bufferevent_run_deferred_callbacks_unlocked (
     cb=<optimized out>, arg=0x7ff5e41b5f00)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/bufferevent.c:208
 #25 0x00007ff60f929d01 in event_process_active_single_queue (
     base=base@entry=0x7ff60d624500, 
     max_to_process=max_to_process@entry=2147483647, 
     endtime=endtime@entry=0x0, activeq=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1726
 #26 0x00007ff60f92a54f in event_process_active (base=0x7ff60d624500)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1789
 #27 event_base_loop (base=0x7ff60d624500, flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:2012
 #28 0x000000000046ace9 in worker_libevent (arg=0x7ff60c74fff0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #29 0x00007ff61085b2d7 in run (this=0x7ff608962610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #30 platform_thread_wrap (arg=0x7ff608962610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #31 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #32 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 25 (Thread 0x7ff5fbfff700 (LWP 10922)):
 #0  0x00007ff60e09ca35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff60e87a1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7ff608a6b158)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7ff608a6b158, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7ff608a6b000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007ff61086620f in Couchbase::Thread::thread_entry (
     this=0x7ff608a6b000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007ff61085b2d7 in run (this=0x7ff608962640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7ff608962640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 24 (Thread 0x7ff5fb7fe700 (LWP 10923)):
 #0  0x00007ff60e09ca35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff60e87a1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7ff608a6b318)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7ff608a6b318, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7ff608a6b1c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007ff61086620f in Couchbase::Thread::thread_entry (
     this=0x7ff608a6b1c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007ff61085b2d7 in run (this=0x7ff608962820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7ff608962820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 23 (Thread 0x7ff5faffd700 (LWP 10924)):
 #0  0x00007ff60e09ca35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff60e87a1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7ff608a6b4d8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7ff608a6b4d8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7ff608a6b380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007ff61086620f in Couchbase::Thread::thread_entry (
     this=0x7ff608a6b380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007ff61085b2d7 in run (this=0x7ff608962910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7ff608962910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 22 (Thread 0x7ff5fa7fc700 (LWP 10925)):
 #0  0x00007ff60e09ca35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff60e87a1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7ff608a6b698)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7ff608a6b698, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7ff608a6b540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007ff61086620f in Couchbase::Thread::thread_entry (
     this=0x7ff608a6b540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007ff61085b2d7 in run (this=0x7ff6089627c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7ff6089627c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 21 (Thread 0x7ff5f9ffb700 (LWP 10926)):
 #0  0x00007ff60e09ca35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff60e87a1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7ff608a6b858)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7ff608a6b858, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7ff608a6b700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007ff61086620f in Couchbase::Thread::thread_entry (
     this=0x7ff608a6b700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007ff61085b2d7 in run (this=0x7ff608962970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7ff608962970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 20 (Thread 0x7ff5f97fa700 (LWP 10927)):
 #0  0x00007ff60e09ca35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff60e87a1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7ff608a6ba18)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7ff608a6ba18, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7ff608a6b8c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007ff61086620f in Couchbase::Thread::thread_entry (
     this=0x7ff608a6b8c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007ff61085b2d7 in run (this=0x7ff608962760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7ff608962760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 19 (Thread 0x7ff5f8ff9700 (LWP 10928)):
 #0  0x00007ff60e09ca35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff60e87a1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7ff608a6bbd8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7ff608a6bbd8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7ff608a6ba80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007ff61086620f in Couchbase::Thread::thread_entry (
     this=0x7ff608a6ba80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007ff61085b2d7 in run (this=0x7ff608962790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7ff608962790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 18 (Thread 0x7ff5f63fe700 (LWP 10931)):
 #0  0x00007ff60e09cde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007ff60fb6be51 in background_thread_sleep (tsdn=<optimized out>, 
     interval=550000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=<optimized out>, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_work (ind=<optimized out>, tsd=0x7ff5f63e5a60)
     at src/background_thread.c:497
 #4  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #5  0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 17 (Thread 0x7ff5f5bfd700 (LWP 10932)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff5e5fda090)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff5e5fda090, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123d089d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, 
     idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
 #6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff5e5fda090, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #7  0x00007ff6123d0f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7ff5ec000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x00007ff6123d4660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7ff5ec000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7ff5ec000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #11 0x00007ff6123c92f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608957800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #15 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #17 0x00007ff61225e488 in operator() (this=0x7ff60d642cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #18 operator() (__closure=0x7ff60d642cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007ff61225e363 in operator() (this=0x7ff60c742080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #21 operator() (__closure=0x7ff60c742070)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #23 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b13000)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #24 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #25 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 16 (Thread 0x7ff5f53fc700 (LWP 10933)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff5e5fda120)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff5e5fda120, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123d09d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff5e5fda120, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007ff6123d0f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7ff5ec000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007ff6123d4660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7ff5ec000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7ff5ec000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007ff6123c92f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608957800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007ff61225e488 in operator() (this=0x7ff60d642dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7ff60d642dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007ff61225e363 in operator() (this=0x7ff60c7420d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7ff60c7420c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b13070)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 15 (Thread 0x7ff5f4bfb700 (LWP 10934)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff5e5fda168)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff5e5fda168, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123d09d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff5e5fda168, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007ff6123d0f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7ff5ec000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007ff6123d4660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7ff5ec000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7ff5ec000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007ff6123c92f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608957800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007ff61225e488 in operator() (this=0x7ff60d642e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7ff60d642e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007ff61225e363 in operator() (this=0x7ff60c742120)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7ff60c742110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b130e0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 14 (Thread 0x7ff5e7fff700 (LWP 10935)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff5e5fda0a8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff5e5fda0a8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123d09d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff5e5fda0a8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007ff6123d0f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7ff5ec000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007ff6123d4660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7ff5ec000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7ff5ec000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007ff6123c92f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608957800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007ff61225e488 in operator() (this=0x7ff60d642e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7ff60d642e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007ff61225e363 in operator() (this=0x7ff60c742170)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7ff60c742160)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b13150)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 13 (Thread 0x7ff5e5fd9700 (LWP 10936)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff5e5fda1c8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff5e5fda1c8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123d09d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff5e5fda1c8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007ff6123d0f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7ff5ec000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007ff6123d4660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7ff5ec000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7ff5ec000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007ff6123c92f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608957800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007ff61225e488 in operator() (this=0x7ff60d642ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7ff60d642ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007ff61225e363 in operator() (this=0x7ff60c7421c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7ff60c7421b0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b131c0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 12 (Thread 0x7ff5e57d8700 (LWP 10937)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff5e5fda030)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff5e5fda030, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123d089d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, 
     idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
 #6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff5e5fda030, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #7  0x00007ff6123d0f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7ff5ec000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x00007ff6123d4660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7ff5ec000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7ff5ec000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #11 0x00007ff6123c92f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608957800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #15 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #17 0x00007ff61225e488 in operator() (this=0x7ff60d642e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #18 operator() (__closure=0x7ff60d642e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007ff61225e363 in operator() (this=0x7ff60c742210)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #21 operator() (__closure=0x7ff60c742200)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #23 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b13230)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #24 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #25 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 11 (Thread 0x7ff5e4fd7700 (LWP 10938)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff5e5fda048)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff5e5fda048, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123d09d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff5e5fda048, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007ff6123d0f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7ff5ec000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007ff6123d4660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7ff5ec000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7ff5ec000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007ff6123c92f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608957800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007ff61225e488 in operator() (this=0x7ff60d642f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7ff60d642f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007ff61225e363 in operator() (this=0x7ff60c742260)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7ff60c742250)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b132a0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 10 (Thread 0x7ff5cbfff700 (LWP 10939)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff5e5fda1b0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff5e5fda1b0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123d089d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, 
     idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
 #6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff5e5fda1b0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #7  0x00007ff6123d0f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7ff5ec000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x00007ff6123d4660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7ff5ec000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7ff5ec000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #11 0x00007ff6123c92f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608957800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #15 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #17 0x00007ff61225e488 in operator() (this=0x7ff60d642f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #18 operator() (__closure=0x7ff60d642f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007ff61225e363 in operator() (this=0x7ff60c7422b0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #21 operator() (__closure=0x7ff60c7422a0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #23 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b13310)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #24 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #25 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 9 (Thread 0x7ff5cb7fe700 (LWP 10940)):
 #0  0x00007ff60dd0b335 in _itoa_word () from /lib64/libc.so.6
 #1  0x00007ff60dd0f5b1 in vfprintf () from /lib64/libc.so.6
 #2  0x00007ff60dd3b0e9 in vsnprintf () from /lib64/libc.so.6
 #3  0x00007ff6122dac6c in __gnu_cxx::__to_xstring<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, char> (
     __convf=<optimized out>, __n=__n@entry=32, 
     __fmt=__fmt@entry=0x7ff6124177cb "%lu", __convf=<optimized out>)
     at /usr/local/include/c++/7.3.0/ext/string_conversions.h:111
 #4  0x00007ff6122dec4a in to_string (__val=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/basic_string.h:6421
 #5  to_json (json=..., vbs=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket_state.cc:146
 #6  0x00007ff61231ed81 in operator()<nlohmann::basic_json<>, const vbucket_state&> (this=<synthetic pointer>, val=..., j=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/json.exploded/include/nlohmann/detail/conversions/to_json.hpp:332
 #7  to_json<nlohmann::basic_json<>, const vbucket_state&> (val=..., j=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/json.exploded/include/nlohmann/adl_serializer.hpp:45
 #8  basic_json<vbucket_state const&> (val=..., this=0x7ff5cb7e3eb0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/json.exploded/include/nlohmann/json.hpp:1253
 #9  CouchKVStore::makeJsonVBState[abi:cxx11](vbucket_state const&) (
     this=this@entry=0x7ff6000c9600, vbState=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:3158
 #10 0x00007ff612333774 in CouchKVStore::writeVBucketState (
     this=this@entry=0x7ff6000c9600, vbucketId=..., vbstate=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1822
 #11 0x00007ff6123342e8 in CouchKVStore::snapshotVBucket (this=0x7ff6000c9600, 
     vbucketId=..., vbstate=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1870
 #12 0x00007ff612207899 in EPBucket::flushVBucket (this=0x7ff6000a1000, 
     vbid=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:713
 #13 0x00007ff61226226c in Flusher::flushVB (this=this@entry=0x7ff6001000c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:303
 #14 0x00007ff612263489 in Flusher::step (this=0x7ff6001000c0, 
     task=0x7ff6000bd890)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:204
 #15 0x00007ff6122661b3 in GlobalTask::execute (this=0x7ff6000bd890)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:75
 #16 0x00007ff61225fd02 in operator() (__closure=0x7ff5cb7e5040)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
 #17 folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
 #18 0x00007ff6123e0e76 in operator() (this=0x7ff5cb7e5040)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
 #19 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (
     this=this@entry=0x7ff608958400, thread=..., 
     task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
 #20 0x00007ff6123c936a in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608958400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
 #21 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #22 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #23 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #24 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #25 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #26 0x00007ff61225e488 in operator() (this=0x7ff60c73e080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #27 operator() (__closure=0x7ff60c73e080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #28 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #29 0x00007ff61225e363 in operator() (this=0x7ff60c742440)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #30 operator() (__closure=0x7ff60c742430)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #31 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #32 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b13380)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #33 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #34 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 8 (Thread 0x7ff5caffd700 (LWP 10941)):
 #0  0x00007ff60ddb8bdd in fdatasync () from /lib64/libc.so.6
 #1  0x00007ff611b9067f in folly::fileutil_detail::wrapNoInt<int (*)(int), int>
     (f=0x7ff60ddb8bb0 <fdatasync>, args#0=74)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/FileUtilDetail.h:37
 #2  0x00007ff611b90162 in folly::fdatasyncNoInt (fd=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/FileUtil.cpp:82
 #3  0x00007ff611b8f552 in PosixFileOps::sync (this=<optimized out>, 
     errinfo=0x7ff5e464a280, handle=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/os.cc:303
 #4  0x00007ff6123188a8 in StatsOps::sync (this=<optimized out>, 
     errinfo=0x7ff5e464a280, h=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-fs-stats.cc:154
 #5  0x00007ff611b6de8e in precommit (db=db@entry=0x7ff5e464a260)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_db.cc:347
 #6  0x00007ff611b6f2b9 in couchstore_commit_ex (db=0x7ff5e464a260, 
     timestamp=1612775211441150577)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_db.cc:362
 #7  0x00007ff611b6f545 in couchstore_commit (db=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_db.cc:356
 #8  0x00007ff61233391c in CouchKVStore::writeVBucketState (
     this=this@entry=0x7ff6000c5e00, vbucketId=..., vbstate=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1835
 #9  0x00007ff6123342e8 in CouchKVStore::snapshotVBucket (this=0x7ff6000c5e00, 
     vbucketId=..., vbstate=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1870
 #10 0x00007ff612207899 in EPBucket::flushVBucket (this=0x7ff6000a1000, 
     vbid=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:713
 #11 0x00007ff61226226c in Flusher::flushVB (this=this@entry=0x7ff6000ff9c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:303
 #12 0x00007ff612263489 in Flusher::step (this=0x7ff6000ff9c0, 
     task=0x7ff6000bd610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:204
 #13 0x00007ff6122661b3 in GlobalTask::execute (this=0x7ff6000bd610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:75
 #14 0x00007ff61225fd02 in operator() (__closure=0x7ff5cafe4040)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
 #15 folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
 #16 0x00007ff6123e0e76 in operator() (this=0x7ff5cafe4040)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
 #17 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (
     this=this@entry=0x7ff608958400, thread=..., 
     task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
 #18 0x00007ff6123c936a in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608958400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
 #19 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #20 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #21 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #22 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #24 0x00007ff61225e488 in operator() (this=0x7ff60c73e0c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #25 operator() (__closure=0x7ff60c73e0c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #26 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #27 0x00007ff61225e363 in operator() (this=0x7ff60c742490)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #28 operator() (__closure=0x7ff60c742480)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #29 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #30 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b133f0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #31 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #32 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 7 (Thread 0x7ff5ca7fc700 (LWP 10942)):
 #0  0x00007ff60ddb8bdd in fdatasync () from /lib64/libc.so.6
 #1  0x00007ff611b9067f in folly::fileutil_detail::wrapNoInt<int (*)(int), int>
     (f=0x7ff60ddb8bb0 <fdatasync>, args#0=69)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/FileUtilDetail.h:37
 #2  0x00007ff611b90162 in folly::fdatasyncNoInt (fd=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/FileUtil.cpp:82
 #3  0x00007ff611b8f552 in PosixFileOps::sync (this=<optimized out>, 
     errinfo=0x7ff5e472d740, handle=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/os.cc:303
 #4  0x00007ff6123188a8 in StatsOps::sync (this=<optimized out>, 
     errinfo=0x7ff5e472d740, h=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-fs-stats.cc:154
 #5  0x00007ff611b6de8e in precommit (db=db@entry=0x7ff5e472d720)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_db.cc:347
 #6  0x00007ff611b6f2b9 in couchstore_commit_ex (db=0x7ff5e472d720, 
     timestamp=1612775210966418802)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_db.cc:362
 #7  0x00007ff611b6f545 in couchstore_commit (db=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_db.cc:356
 #8  0x00007ff61233391c in CouchKVStore::writeVBucketState (
     this=this@entry=0x7ff6000ca400, vbucketId=..., vbstate=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1835
 #9  0x00007ff6123342e8 in CouchKVStore::snapshotVBucket (this=0x7ff6000ca400, 
     vbucketId=..., vbstate=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1870
 #10 0x00007ff612207899 in EPBucket::flushVBucket (this=0x7ff6000a1000, 
     vbid=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:713
 #11 0x00007ff61226226c in Flusher::flushVB (this=this@entry=0x7ff600100280)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:303
 #12 0x00007ff612263489 in Flusher::step (this=0x7ff600100280, 
     task=0x7ff6000bd930)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:204
 #13 0x00007ff6122661b3 in GlobalTask::execute (this=0x7ff6000bd930)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:75
 #14 0x00007ff61225fd02 in operator() (__closure=0x7ff5ca7e3040)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
 #15 folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
 #16 0x00007ff6123e0e76 in operator() (this=0x7ff5ca7e3040)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
 #17 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (
     this=this@entry=0x7ff608958400, thread=..., 
     task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
 #18 0x00007ff6123c936a in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608958400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
 #19 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #20 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #21 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #22 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #24 0x00007ff61225e488 in operator() (this=0x7ff60c73e100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #25 operator() (__closure=0x7ff60c73e100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #26 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #27 0x00007ff61225e363 in operator() (this=0x7ff60c7424e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #28 operator() (__closure=0x7ff60c7424d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #29 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #30 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b13460)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #31 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #32 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 6 (Thread 0x7ff5c9ffb700 (LWP 10943)):
 #0  0x00007ff60ddb8bdd in fdatasync () from /lib64/libc.so.6
 #1  0x00007ff611b9067f in folly::fileutil_detail::wrapNoInt<int (*)(int), int>
     (f=0x7ff60ddb8bb0 <fdatasync>, args#0=73)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/FileUtilDetail.h:37
 #2  0x00007ff611b90162 in folly::fdatasyncNoInt (fd=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/FileUtil.cpp:82
 #3  0x00007ff611b8f552 in PosixFileOps::sync (this=<optimized out>, 
     errinfo=0x7ff5c86a62e0, handle=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/os.cc:303
 #4  0x00007ff6123188a8 in StatsOps::sync (this=<optimized out>, 
     errinfo=0x7ff5c86a62e0, h=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-fs-stats.cc:154
 #5  0x00007ff611b6de8e in precommit (db=db@entry=0x7ff5c86a62c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_db.cc:347
 #6  0x00007ff611b6f2b9 in couchstore_commit_ex (db=0x7ff5c86a62c0, 
     timestamp=1612775210966181253)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_db.cc:362
 #7  0x00007ff611b6f545 in couchstore_commit (db=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_db.cc:356
 #8  0x00007ff61233391c in CouchKVStore::writeVBucketState (
     this=this@entry=0x7ff6000cb200, vbucketId=..., vbstate=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1835
 #9  0x00007ff6123342e8 in CouchKVStore::snapshotVBucket (this=0x7ff6000cb200, 
     vbucketId=..., vbstate=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1870
 #10 0x00007ff612207899 in EPBucket::flushVBucket (this=0x7ff6000a1000, 
     vbid=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:713
 #11 0x00007ff61226226c in Flusher::flushVB (this=this@entry=0x7ff600100440)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:303
 #12 0x00007ff612263489 in Flusher::step (this=0x7ff600100440, 
     task=0x7ff6000bd9d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:204
 #13 0x00007ff6122661b3 in GlobalTask::execute (this=0x7ff6000bd9d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:75
 #14 0x00007ff61225fd02 in operator() (__closure=0x7ff5c9fe2040)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
 #15 folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
 #16 0x00007ff6123e0e76 in operator() (this=0x7ff5c9fe2040)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
 #17 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (
     this=this@entry=0x7ff608958400, thread=..., 
     task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
 #18 0x00007ff6123c936a in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608958400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
 #19 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #20 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #21 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #22 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #24 0x00007ff61225e488 in operator() (this=0x7ff60c73e180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #25 operator() (__closure=0x7ff60c73e180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #26 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #27 0x00007ff61225e363 in operator() (this=0x7ff60c742530)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #28 operator() (__closure=0x7ff60c742520)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #29 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #30 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b134d0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #31 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #32 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 5 (Thread 0x7ff5c97fa700 (LWP 10944)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff5e5fda180)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff5e5fda180, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123d09d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff5e5fda180, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007ff6123d0f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7ff5ec0033c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007ff6123d4660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7ff5ec0033c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7ff5ec003380, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007ff6123c92f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608982000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007ff61225e488 in operator() (this=0x7ff60c73e240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7ff60c73e240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007ff61225e363 in operator() (this=0x7ff60c7425d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7ff60c7425c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b13540)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 4 (Thread 0x7ff5c8ff9700 (LWP 10945)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff5e5fda210)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff5e5fda210, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123d09d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff5e5fda210, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007ff6123d0f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7ff5ec003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007ff6123d4660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7ff5ec003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7ff5ec003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007ff6123c92f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608982c00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007ff61225e488 in operator() (this=0x7ff60c73e340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7ff60c73e340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007ff61225e363 in operator() (this=0x7ff60c7426c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7ff60c7426b0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b135b0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 3 (Thread 0x7ff5a7fff700 (LWP 10946)):
 #0  0x00007ff60ddbbbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007ff6123c3d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007ff6123caf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7ff5e5fda018)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7ff5e5fda018, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007ff6123d09d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7ff5e5fda018, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007ff6123d0f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7ff5ec003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007ff6123d4660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7ff5ec003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7ff5ec003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007ff6123c92f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7ff608982c00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007ff61225e488 in operator() (this=0x7ff60c73e380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7ff60c73e380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007ff61225e363 in operator() (this=0x7ff60c742710)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7ff60c742700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b13620)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 2 (Thread 0x7ff5a77fe700 (LWP 10947)):
 #0  0x00007ff60ddc1eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007ff60f9333c5 in epoll_dispatch (base=0x7ff6089dd000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007ff60f92a376 in event_base_loop (base=0x7ff6089dd000, flags=1)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00007ff6123e9357 in folly::EventBase::loopBody (
     this=this@entry=0x7ff608975780, flags=flags@entry=0, 
     ignoreKeepAlive=ignoreKeepAlive@entry=false)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
 #4  0x00007ff6123e9826 in folly::EventBase::loop (
     this=this@entry=0x7ff608975780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
 #5  0x00007ff6123eb1e6 in folly::EventBase::loopForever (this=0x7ff608975780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
 #6  0x00007ff6123d86b9 in folly::IOThreadPoolExecutor::threadRun (
     this=0x7ff60893a780, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/IOThreadPoolExecutor.cpp:195
 #7  0x00007ff6123e3f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #8  __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #10 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #11 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #12 0x00007ff60e87fdcf in std::execute_native_thread_routine (
     __p=0x7ff608b13690)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007ff60e098ea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007ff60ddc18dd in clone () from /lib64/libc.so.6
 
 Thread 1 (Thread 0x7ff6131fb400 (LWP 10905)):
 #0  0x00007ff60ddc1eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007ff60f9333c5 in epoll_dispatch (base=0x7ff60d623000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007ff60f92a376 in event_base_loop (base=0x7ff60d623000, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00000000004277a2 in memcached_main (argc=<optimized out>, 
     argv=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/memcached.cc:1535
 #4  0x00007ff60dce5555 in __libc_start_main () from /lib64/libc.so.6
 #5  0x000000000041fb75 in _start ()
 Detaching from program: /opt/couchbase/bin/memcached, process 10905
 [Inferior 1 (process 10905) detached]

2021-02-08 01:07:02,407 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.130: No 'sanitizers.log.*' files found
2021-02-08 01:07:02,891 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:711] 172.23.121.131: 2 core dump seen
2021-02-08 01:07:11,690 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:712] 172.23.121.131: Stack Trace of first crash - 96220ace-eb53-4031-5c0b8585-0085f094.dmp
Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'.
 #0  0x00007fbe6446a387 in raise () from /lib64/libc.so.6
 #0  0x00007fbe6446a387 in raise () from /lib64/libc.so.6
 No symbol table info available.
 #1  0x00007fbe6446ba78 in abort () from /lib64/libc.so.6
 No symbol table info available.
 #2  0x00007fbe64fc8195 in __gnu_cxx::__verbose_terminate_handler () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/vterminate.cc:95
         terminating = false
         t = <optimized out>
 #3  0x0000000000555bf2 in backtrace_terminate_handler () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:86
 No locals.
 #4  0x00007fbe64fc5f86 in __cxxabiv1::__terminate (handler=<optimized out>) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:47
 No locals.
 #5  0x00007fbe64fc5fd1 in std::terminate () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:57
 No locals.
 #6  0x00007fbe689d71d3 in GlobalTask::execute (this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:78
 No locals.
 #7  0x00007fbe689d0d02 in operator() (__closure=0x7fbdd7fe6040) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
         executedAt = <optimized out>
         end = <optimized out>
         scheduleOverhead = <optimized out>
         start = {__d = {__r = 953508417209535}}
         runAgain = false
         proxy = @0x7fbe583ada30: <error reading variable>
 #8  folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
         fn = @0x7fbdd7fe6040: {__proxy = @0x7fbe583ada30}
 #9  0x00007fbe68b51e76 in operator() (this=0x7fbdd7fe6040) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
         fn = @0x7fbdd7fe6040: {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x7fbe583ada30, tiny = {__data = "0\332:X\276\177\000\000\000\000\000\000\000\000\000\000\340\021.`\276\177\000\000\200/\000\b\276\177\000\000\001\000\000\000\000\000\000\000\220`\376\327\275\177\000", __align = {<No data fields>}}}, call_ = 0x7fbe689d0c40 <folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&)>, exec_ = 0x7fbe689ce650 <folly::detail::function::execSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Op, folly::detail::function::Data*, folly::detail::function::Data)>}
 #10 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=0x7fbe60124400, thread=..., task=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
         rctx = {prev_ = {<std::__shared_ptr<folly::RequestContext, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<folly::RequestContext, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x0, _M_refcount = {_M_pi = 0x0}}, <No data fields>}}
         startTime = {__d = {__r = 953508417207267}}
         stats = {expired = false, waitTime = {__r = 10890}, runTime = {__r = 0}, enqueueTime = {__d = {__r = 953508417196377}}, requestId = 0}
 #11 0x00007fbe68b3a36a in folly::CPUThreadPoolExecutor::threadRun (this=0x7fbe60124400, thread=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
         guard = {list_ = {forbid = true, prev = 0x0, curr = {name = {static npos = <optimized out>, b_ = 0x7fbe68bba05b "CPUThreadPoolExecutor", e_ = 0x7fbe68bba070 ""}}}}
 #12 0x00007fbe68b54f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 No locals.
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 No locals.
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
 No locals.
 #15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
 No locals.
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
         fn = <optimized out>
 #17 0x00007fbe689cf488 in operator() (this=0x7fbe6012d180) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7fbe6012d180: <error reading variable>
 #18 operator() (__closure=0x7fbe6012d180) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
         threadNameOpt = {storage_ = {{emptyState = -112 '\220', value = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7fbdd7fe6190 "WriterPool3"}, _M_string_length = 11, {_M_local_buf = "WriterPool3\000\000\000\000", _M_allocated_capacity = 8021036716417184343}}}, hasValue = true}}
         func = <error reading variable func (Cannot access memory at address 0x7fbe6012d180)>
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7fbe6012d180: <error reading variable>
 #20 0x00007fbe689cf363 in operator() (this=0x7fbe63e26f50) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7fbe63e26f50: <error reading variable>
 #21 operator() (__closure=0x7fbe63e26f40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
         func = <error reading variable func (Cannot access memory at address 0x7fbe63e26f50)>
         priority = <error reading variable priority (Cannot access memory at address 0x7fbe63e26f40)>
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7fbe63e26f40: <error reading variable>
 #23 0x00007fbe64ff0dcf in std::execute_native_thread_routine (__p=0x7fbe583aa7e0) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
         __t = {_M_t = {_M_t = {<std::_Tuple_impl<0, std::thread::_State*, std::default_delete<std::thread::_State> >> = {<std::_Tuple_impl<1, std::default_delete<std::thread::_State> >> = {<std::_Head_base<1, std::default_delete<std::thread::_State>, true>> = {<std::default_delete<std::thread::_State>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, std::thread::_State*, false>> = {_M_head_impl = 0x7fbe583aa7e0}, <No data fields>}, <No data fields>}}}
 #24 0x00007fbe64809ea5 in start_thread () from /lib64/libpthread.so.0
 No symbol table info available.
 #25 0x00007fbe645328dd in clone () from /lib64/libc.so.6
 No symbol table info available.

[Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib64/libthread_db.so.1".
 Loaded symbols for /lib64/libpthread.so.0
 Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib64/libc.so.6
 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
 Loaded symbols for /lib64/ld-linux-x86-64.so.2
 Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done.
 Loaded symbols for /lib64/librt.so.1
 0x00007fe31a639eb3 in epoll_wait () from /lib64/libc.so.6
 
 Thread 41 (Thread 0x7fe3199ff700 (LWP 24286)):
 #0  0x00007fe31a914de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31c3e45a7 in background_thread_sleep (tsdn=<optimized out>, 
     interval=10000000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=0, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_thread0_work (tsd=0x7fe3199e6a60)
     at src/background_thread.c:452
 #4  background_work (ind=<optimized out>, tsd=0x7fe3199e6a60)
     at src/background_thread.c:490
 #5  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #6  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 40 (Thread 0x7fe318c7e700 (LWP 24287)):
 #0  0x00007fe31a914de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31de0c8cd in __gthread_cond_timedwait (
     __abs_timeout=0x7fe318c64fa0, __mutex=<optimized out>, 
     __cond=0x7fe319e2e138)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7fe319e2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7fe319e2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __atime=..., __lock=..., this=0x7fe319e2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1, 1000>, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __rtime=<synthetic pointer>, __lock=..., 
     this=0x7fe319e2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  dequeue_for (wait_duration=..., popped_item=..., this=0x7fe319e2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/mpmc_blocking_q.h:61
 #7  spdlog::details::thread_pool::process_next_msg_ (
     this=this@entry=0x7fe319e2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:193
 #8  0x00007fe31de0ce20 in spdlog::details::thread_pool::worker_loop_ (
     this=0x7fe319e2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:184
 #9  0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe319e58c40)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #10 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 39 (Thread 0x7fe31847d700 (LWP 24288)):
 #0  0x00007fe31a914de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31de0bf8a in __gthread_cond_timedwait (
     __abs_timeout=0x7fe3184641f0, __mutex=<optimized out>, 
     __cond=<optimized out>)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> >
     (__p=..., __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1>, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__p=..., __rtime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  operator() (__closure=0x7fe319fffa08)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/periodic_worker.h:38
 #7  __invoke_impl<void, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (
     __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:60
 #8  __invoke<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  _M_invoke<0> (this=0x7fe319fffa08)
     at /usr/local/include/c++/7.3.0/thread:234
 #10 operator() (this=0x7fe319fffa08)
     at /usr/local/include/c++/7.3.0/thread:243
 #11 _ZNSt6thread11_State_implINS_8_InvokerISt5tupleIJZN6spdlog7details15periodic_workerC4ERKSt8functionIFvvEENSt6chrono8durationIlSt5ratioILl1ELl1EEEEEUlvE_EEEEE6_M_runEv (this=0x7fe319fffa00) at /usr/local/include/c++/7.3.0/thread:186
 #12 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe319fffa00)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 38 (Thread 0x7fe317c7c700 (LWP 24289)):
 #0  0x00007fe31a62ec3d in poll () from /lib64/libc.so.6
 #1  0x000000000046a0de in get_command (buffsize=80, buffer=0x7fe317c631d0 "")
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:49
 #2  check_stdin_thread (arg=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:90
 #3  0x00007fe31d0d32d7 in run (this=0x7fe319e59c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #4  platform_thread_wrap (arg=0x7fe319e59c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #5  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 37 (Thread 0x7fe31747b700 (LWP 24290)):
 #0  0x00007fe31a914a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31e6a9bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x154b240, ctx=0x1549d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x154a950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x154a950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 36 (Thread 0x7fe316c7a700 (LWP 24291)):
 #0  0x00007fe31a914a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31e6a9bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x154bc28, ctx=0x1549d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x154b338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x154b338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 35 (Thread 0x7fe316479700 (LWP 24292)):
 #0  0x00007fe31a62ec3d in poll () from /lib64/libc.so.6
 #1  0x00007fe31e6a0ba8 in master_thread_run (ctx=0x1549d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19148
 #2  master_thread (thread_func_param=0x1549d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19243
 #3  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #4  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 34 (Thread 0x7fe315c78700 (LWP 24293)):
 #0  0x00007fe31a914de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004917e0 in __gthread_cond_timedwait (
     __abs_timeout=0x7fe315c5f1d0, __mutex=<optimized out>, 
     __cond=0x7fe319e2f0f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=<synthetic pointer>, this=0x7fe319e2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=<synthetic pointer>, this=0x7fe319e2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=<synthetic pointer>, 
     __lock=<synthetic pointer>, this=0x7fe319e2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  ExternalAuthManagerThread::run (this=0x7fe319e2f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/external_auth_manager_thread.cc:229
 #6  0x00007fe31d0de20f in Couchbase::Thread::thread_entry (
     this=0x7fe319e2f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #7  0x00007fe31d0d32d7 in run (this=0x7fe319e5a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #8  platform_thread_wrap (arg=0x7fe319e5a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #9  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #10 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 33 (Thread 0x7fe3150f7700 (LWP 24294)):
 #0  0x00007fe31a914de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004efcb6 in __gthread_cond_timedwait (
     __abs_timeout=0x7fe3150de1f0, __mutex=<optimized out>, 
     __cond=0x7fe318c8e8f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7fe318c8e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7fe318c8e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1> > (__rtime=..., __lock=..., 
     this=0x7fe318c8e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  AuditImpl::consume_events (this=0x7fe318c8e500)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/auditd/src/audit.cc:414
 #6  0x00007fe31d0d32d7 in run (this=0x7fe319e5a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #7  platform_thread_wrap (arg=0x7fe319e5a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #8  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #9  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 32 (Thread 0x7fe3148f6700 (LWP 24295)):
 #0  0x00007fe31a639eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe31c1ab3c5 in epoll_dispatch (base=0x7fe319e23300, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fe31c1a2376 in event_base_loop (base=0x7fe319e23300, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fe318f4c000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fe31d0d32d7 in run (this=0x7fe315162730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fe315162730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 31 (Thread 0x7fe30ffff700 (LWP 24296)):
 #0  0x00007fe31a639eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe31c1ab3c5 in epoll_dispatch (base=0x7fe319e23600, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fe31c1a2376 in event_base_loop (base=0x7fe319e23600, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fe318f4caa8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fe31d0d32d7 in run (this=0x7fe3151624f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fe3151624f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 30 (Thread 0x7fe30f7fe700 (LWP 24297)):
 #0  0x00007fe31a639eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe31c1ab3c5 in epoll_dispatch (base=0x7fe319e23900, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fe31c1a2376 in event_base_loop (base=0x7fe319e23900, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fe318f4d550)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fe31d0d32d7 in run (this=0x7fe3151626d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fe3151626d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 29 (Thread 0x7fe30effd700 (LWP 24298)):
 #0  0x00007fe31a639eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe31c1ab3c5 in epoll_dispatch (base=0x7fe319e23c00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fe31c1a2376 in event_base_loop (base=0x7fe319e23c00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fe318f4dff8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fe31d0d32d7 in run (this=0x7fe3151627f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fe3151627f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 28 (Thread 0x7fe30e7fc700 (LWP 24299)):
 #0  0x00007fe31a639eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe31c1ab3c5 in epoll_dispatch (base=0x7fe319e23f00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fe31c1a2376 in event_base_loop (base=0x7fe319e23f00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fe318f4eaa0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fe31d0d32d7 in run (this=0x7fe315162670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fe315162670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 27 (Thread 0x7fe30dffb700 (LWP 24300)):
 #0  0x00007fe31a639eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe31c1ab3c5 in epoll_dispatch (base=0x7fe319e24200, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fe31c1a2376 in event_base_loop (base=0x7fe319e24200, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fe318f4f548)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fe31d0d32d7 in run (this=0x7fe315162850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fe315162850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 26 (Thread 0x7fe30d7fa700 (LWP 24301)):
 #0  0x00007fe31a639eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe31c1ab3c5 in epoll_dispatch (base=0x7fe319e24500, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fe31c1a2376 in event_base_loop (base=0x7fe319e24500, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fe318f4fff0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fe31d0d32d7 in run (this=0x7fe315162610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fe315162610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 25 (Thread 0x7fe30cff9700 (LWP 24302)):
 #0  0x00007fe31a914a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31b0f21bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fe31526b158)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fe31526b158, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fe31526b000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fe31d0de20f in Couchbase::Thread::thread_entry (
     this=0x7fe31526b000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fe31d0d32d7 in run (this=0x7fe315162640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fe315162640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 24 (Thread 0x7fe307fff700 (LWP 24303)):
 #0  0x00007fe31a914a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31b0f21bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fe31526b318)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fe31526b318, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fe31526b1c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fe31d0de20f in Couchbase::Thread::thread_entry (
     this=0x7fe31526b1c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fe31d0d32d7 in run (this=0x7fe315162820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fe315162820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 23 (Thread 0x7fe3077fe700 (LWP 24304)):
 #0  0x00007fe31a914a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31b0f21bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fe31526b4d8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fe31526b4d8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fe31526b380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fe31d0de20f in Couchbase::Thread::thread_entry (
     this=0x7fe31526b380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fe31d0d32d7 in run (this=0x7fe315162910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fe315162910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 22 (Thread 0x7fe306ffd700 (LWP 24305)):
 #0  0x00007fe31a914a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31b0f21bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fe31526b698)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fe31526b698, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fe31526b540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fe31d0de20f in Couchbase::Thread::thread_entry (
     this=0x7fe31526b540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fe31d0d32d7 in run (this=0x7fe3151627c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fe3151627c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 21 (Thread 0x7fe3067fc700 (LWP 24306)):
 #0  0x00007fe31a914a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31b0f21bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fe31526b858)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fe31526b858, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fe31526b700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fe31d0de20f in Couchbase::Thread::thread_entry (
     this=0x7fe31526b700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fe31d0d32d7 in run (this=0x7fe315162970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fe315162970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 20 (Thread 0x7fe305ffb700 (LWP 24307)):
 #0  0x00007fe31a914a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31b0f21bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fe31526ba18)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fe31526ba18, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fe31526b8c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fe31d0de20f in Couchbase::Thread::thread_entry (
     this=0x7fe31526b8c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fe31d0d32d7 in run (this=0x7fe315162760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fe315162760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 19 (Thread 0x7fe3057fa700 (LWP 24308)):
 #0  0x00007fe31a914a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31b0f21bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fe31526bbd8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fe31526bbd8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fe31526ba80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fe31d0de20f in Couchbase::Thread::thread_entry (
     this=0x7fe31526ba80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fe31d0d32d7 in run (this=0x7fe315162790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fe315162790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 18 (Thread 0x7fe3033f8700 (LWP 24311)):
 #0  0x00007fe31a914de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe31c3e3e51 in background_thread_sleep (tsdn=<optimized out>, 
     interval=10000000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=<optimized out>, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_work (ind=<optimized out>, tsd=0x7fe3033dfa60)
     at src/background_thread.c:497
 #4  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #5  0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 17 (Thread 0x7fe302bf7700 (LWP 24312)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db1c8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db1c8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db1c8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f8000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f8000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe319e38cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe319e38cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f40140)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f40130)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c97440)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 16 (Thread 0x7fe3023f6700 (LWP 24313)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db1e0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db1e0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db1e0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f8000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f8000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe319e38dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe319e38dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f40190)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f40180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c974b0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 15 (Thread 0x7fe301bf5700 (LWP 24314)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db2d0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db2d0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db2d0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f8000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f8000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe319e38e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe319e38e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f401e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f401d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c97520)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 14 (Thread 0x7fe3013f4700 (LWP 24315)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db210)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db210, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db210, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f8000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f8000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe319e38e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe319e38e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f40230)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f40220)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c97590)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 13 (Thread 0x7fe300bf3700 (LWP 24316)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db108)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db108, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db108, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f8000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f8000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe319e38ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe319e38ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f40280)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f40270)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c97600)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 12 (Thread 0x7fe2ea7da700 (LWP 24317)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db030)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db030, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db030, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f8000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f8000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe319e38e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe319e38e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f402d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f402c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c97670)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 11 (Thread 0x7fe2e9fd9700 (LWP 24318)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db2a0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db2a0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db2a0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f8000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f8000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe319e38f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe319e38f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f40320)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f40310)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c976e0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 10 (Thread 0x7fe2e97d8700 (LWP 24319)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db2b8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db2b8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db2b8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f8000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f8000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe319e38f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe319e38f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f40370)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f40360)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c97750)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 9 (Thread 0x7fe2e8fd7700 (LWP 24320)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db258)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db258, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db258, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f80024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f80024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe3191f8080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe3191f8080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f40500)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f404f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c977c0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 8 (Thread 0x7fe2cbfff700 (LWP 24321)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db270)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db270, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db270, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f80024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f80024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe3191f80c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe3191f80c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f40550)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f40540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c97830)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 7 (Thread 0x7fe2cb7fe700 (LWP 24322)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db1f8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db1f8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db1f8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f80024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f80024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe3191f8100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe3191f8100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f405a0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f40590)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c978a0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 6 (Thread 0x7fe2caffd700 (LWP 24323)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db0f0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db0f0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db0f0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f80024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f80024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31512c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe3191f8180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe3191f8180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f405f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f405e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c97910)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 5 (Thread 0x7fe2ca7fc700 (LWP 24324)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db138)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db138, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db138, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f80033c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f80033c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8003380, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31515b000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe3191f8240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe3191f8240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f40690)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f40680)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c97980)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 4 (Thread 0x7fe2c9ffb700 (LWP 24325)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db288)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db288, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db288, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f8003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f8003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31515bc00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe3191f8340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe3191f8340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f40780)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f40770)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c979f0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 3 (Thread 0x7fe2c97fa700 (LWP 24326)):
 #0  0x00007fe31a633bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fe31ec3bd7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fe31ec42f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fe2ea7db180)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fe2ea7db180, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fe31ec489d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fe2ea7db180, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fe31ec48f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fe2f8003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fe31ec4c660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fe2f8003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fe2f8003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fe31ec412f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fe31515bc00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fe31ead6488 in operator() (this=0x7fe3191f8380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fe3191f8380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fe31ead6363 in operator() (this=0x7fe318f407d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fe318f407c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c97a60)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 2 (Thread 0x7fe2abfff700 (LWP 24327)):
 #0  0x00007fe31a639eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe31c1ab3c5 in epoll_dispatch (base=0x7fe31519d000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fe31c1a2376 in event_base_loop (base=0x7fe31519d000, flags=1)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00007fe31ec61357 in folly::EventBase::loopBody (
     this=this@entry=0x7fe315146780, flags=flags@entry=0, 
     ignoreKeepAlive=ignoreKeepAlive@entry=false)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
 #4  0x00007fe31ec61826 in folly::EventBase::loop (
     this=this@entry=0x7fe315146780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
 #5  0x00007fe31ec631e6 in folly::EventBase::loopForever (this=0x7fe315146780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
 #6  0x00007fe31ec506b9 in folly::IOThreadPoolExecutor::threadRun (
     this=0x7fe315110780, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/IOThreadPoolExecutor.cpp:195
 #7  0x00007fe31ec5bf99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #8  __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #10 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #11 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #12 0x00007fe31b0f7dcf in std::execute_native_thread_routine (
     __p=0x7fe318c97ad0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007fe31a910ea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007fe31a6398dd in clone () from /lib64/libc.so.6
 
 Thread 1 (Thread 0x7fe31fa73400 (LWP 24285)):
 #0  0x00007fe31a639eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe31c1ab3c5 in epoll_dispatch (base=0x7fe319e23000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fe31c1a2376 in event_base_loop (base=0x7fe319e23000, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00000000004277a2 in memcached_main (argc=<optimized out>, 
     argv=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/memcached.cc:1535
 #4  0x00007fe31a55d555 in __libc_start_main () from /lib64/libc.so.6
 #5  0x000000000041fb75 in _start ()
 Detaching from program: /opt/couchbase/bin/memcached, process 24285
 [Inferior 1 (process 24285) detached]

2021-02-08 01:07:19,476 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.131: No 'sanitizers.log.*' files found
2021-02-08 01:07:19,964 | test  | DEBUG   | MainThread | [basetestcase:check_coredump_exist:720] 172.23.121.132: No crash files found
2021-02-08 01:07:20,115 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.132: No 'sanitizers.log.*' files found
2021-02-08 01:07:20,578 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:711] 172.23.121.133: 2 core dump seen
2021-02-08 01:07:29,589 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:712] 172.23.121.133: Stack Trace of first crash - 777cafb7-b844-40d8-e7bed195-a311ed49.dmp
Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'.
 #0  0x00007f8b63776387 in raise () from /lib64/libc.so.6
 #0  0x00007f8b63776387 in raise () from /lib64/libc.so.6
 No symbol table info available.
 #1  0x00007f8b63777a78 in abort () from /lib64/libc.so.6
 No symbol table info available.
 #2  0x00007f8b642d4195 in __gnu_cxx::__verbose_terminate_handler () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/vterminate.cc:95
         terminating = false
         t = <optimized out>
 #3  0x0000000000555bf2 in backtrace_terminate_handler () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:86
 No locals.
 #4  0x00007f8b642d1f86 in __cxxabiv1::__terminate (handler=<optimized out>) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:47
 No locals.
 #5  0x00007f8b642d1fd1 in std::terminate () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:57
 No locals.
 #6  0x00007f8b67ce31d3 in GlobalTask::execute (this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:78
 No locals.
 #7  0x00007f8b67cdcd02 in operator() (__closure=0x7f8b00fbe040) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
         executedAt = <optimized out>
         end = <optimized out>
         scheduleOverhead = <optimized out>
         start = {__d = {__r = 953519520701785}}
         runAgain = false
         proxy = @0x7f8b543211d0: <error reading variable>
 #8  folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
         fn = @0x7f8b00fbe040: {__proxy = @0x7f8b543211d0}
 #9  0x00007f8b67e5de76 in operator() (this=0x7f8b00fbe040) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
         fn = @0x7f8b00fbe040: {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x7f8b543211d0, tiny = {__data = "\320\021\062T\213\177\000\000\000\000\000\000\000\000\000\000\060\026\062T\213\177\000\000\000\000\000\000\000\000\000\000\236\217\261c\213\177\000\000\220\340\373\000\213\177\000", __align = {<No data fields>}}}, call_ = 0x7f8b67cdcc40 <folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&)>, exec_ = 0x7f8b67cda650 <folly::detail::function::execSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Op, folly::detail::function::Data*, folly::detail::function::Data)>}
 #10 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=0x7f8b5e674800, thread=..., task=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
         rctx = {prev_ = {<std::__shared_ptr<folly::RequestContext, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<folly::RequestContext, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x0, _M_refcount = {_M_pi = 0x0}}, <No data fields>}}
         startTime = {__d = {__r = 953519520698368}}
         stats = {expired = false, waitTime = {__r = 21168}, runTime = {__r = 0}, enqueueTime = {__d = {__r = 953519520677200}}, requestId = 0}
 #11 0x00007f8b67e4636a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8b5e674800, thread=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
         guard = {list_ = {forbid = true, prev = 0x0, curr = {name = {static npos = <optimized out>, b_ = 0x7f8b67ec605b "CPUThreadPoolExecutor", e_ = 0x7f8b67ec6070 ""}}}}
 #12 0x00007f8b67e60f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 No locals.
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 No locals.
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
 No locals.
 #15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
 No locals.
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
         fn = <optimized out>
 #17 0x00007f8b67cdb488 in operator() (this=0x7f8b5e324480) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7f8b5e324480: <error reading variable>
 #18 operator() (__closure=0x7f8b5e324480) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
         threadNameOpt = {storage_ = {{emptyState = -112 '\220', value = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7f8b00fbe190 "WriterPool0"}, _M_string_length = 11, {_M_local_buf = "WriterPool0\000\000\000\000", _M_allocated_capacity = 8021036716417184343}}}, hasValue = true}}
         func = <error reading variable func (Cannot access memory at address 0x7f8b5e324480)>
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7f8b5e324480: <error reading variable>
 #20 0x00007f8b67cdb363 in operator() (this=0x7f8b63026e60) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7f8b63026e60: <error reading variable>
 #21 operator() (__closure=0x7f8b63026e50) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
         func = <error reading variable func (Cannot access memory at address 0x7f8b63026e60)>
         priority = <error reading variable priority (Cannot access memory at address 0x7f8b63026e50)>
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7f8b63026e50: <error reading variable>
 #23 0x00007f8b642fcdcf in std::execute_native_thread_routine (__p=0x7f8b5431df10) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
         __t = {_M_t = {_M_t = {<std::_Tuple_impl<0, std::thread::_State*, std::default_delete<std::thread::_State> >> = {<std::_Tuple_impl<1, std::default_delete<std::thread::_State> >> = {<std::_Head_base<1, std::default_delete<std::thread::_State>, true>> = {<std::default_delete<std::thread::_State>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, std::thread::_State*, false>> = {_M_head_impl = 0x7f8b5431df10}, <No data fields>}, <No data fields>}}}
 #24 0x00007f8b63b15ea5 in start_thread () from /lib64/libpthread.so.0
 No symbol table info available.
 #25 0x00007f8b6383e8dd in clone () from /lib64/libc.so.6
 No symbol table info available.

[Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib64/libthread_db.so.1".
 Loaded symbols for /lib64/libpthread.so.0
 Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib64/libc.so.6
 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
 Loaded symbols for /lib64/ld-linux-x86-64.so.2
 Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done.
 Loaded symbols for /lib64/librt.so.1
 0x00007fd368350eb3 in epoll_wait () from /lib64/libc.so.6
 
 Thread 41 (Thread 0x7fd3677ff700 (LWP 21774)):
 #0  0x00007fd36862bde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd36a0fb5a7 in background_thread_sleep (tsdn=<optimized out>, 
     interval=10000000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=0, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_thread0_work (tsd=0x7fd3677e6a60)
     at src/background_thread.c:452
 #4  background_work (ind=<optimized out>, tsd=0x7fd3677e6a60)
     at src/background_thread.c:490
 #5  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #6  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 40 (Thread 0x7fd366a7e700 (LWP 21775)):
 #0  0x00007fd36862bde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd36bb238cd in __gthread_cond_timedwait (
     __abs_timeout=0x7fd366a64fa0, __mutex=<optimized out>, 
     __cond=0x7fd367c2e138)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7fd367c2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7fd367c2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __atime=..., __lock=..., this=0x7fd367c2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1, 1000>, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __rtime=<synthetic pointer>, __lock=..., 
     this=0x7fd367c2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  dequeue_for (wait_duration=..., popped_item=..., this=0x7fd367c2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/mpmc_blocking_q.h:61
 #7  spdlog::details::thread_pool::process_next_msg_ (
     this=this@entry=0x7fd367c2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:193
 #8  0x00007fd36bb23e20 in spdlog::details::thread_pool::worker_loop_ (
     this=0x7fd367c2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:184
 #9  0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd367c58c40)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #10 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 39 (Thread 0x7fd36627d700 (LWP 21776)):
 #0  0x00007fd36862bde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd36bb22f8a in __gthread_cond_timedwait (
     __abs_timeout=0x7fd3662641f0, __mutex=<optimized out>, 
     __cond=<optimized out>)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> >
     (__p=..., __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1>, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__p=..., __rtime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  operator() (__closure=0x7fd367dffa08)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/periodic_worker.h:38
 #7  __invoke_impl<void, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (
     __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:60
 #8  __invoke<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  _M_invoke<0> (this=0x7fd367dffa08)
     at /usr/local/include/c++/7.3.0/thread:234
 #10 operator() (this=0x7fd367dffa08)
     at /usr/local/include/c++/7.3.0/thread:243
 #11 _ZNSt6thread11_State_implINS_8_InvokerISt5tupleIJZN6spdlog7details15periodic_workerC4ERKSt8functionIFvvEENSt6chrono8durationIlSt5ratioILl1ELl1EEEEEUlvE_EEEEE6_M_runEv (this=0x7fd367dffa00) at /usr/local/include/c++/7.3.0/thread:186
 #12 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd367dffa00)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 38 (Thread 0x7fd365a7c700 (LWP 21777)):
 #0  0x00007fd368345c3d in poll () from /lib64/libc.so.6
 #1  0x000000000046a0de in get_command (buffsize=80, buffer=0x7fd365a631d0 "")
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:49
 #2  check_stdin_thread (arg=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:90
 #3  0x00007fd36adea2d7 in run (this=0x7fd367c59c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #4  platform_thread_wrap (arg=0x7fd367c59c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #5  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 37 (Thread 0x7fd36527b700 (LWP 21778)):
 #0  0x00007fd36862ba35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd36c3c0bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x1218240, ctx=0x1216d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x1217950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x1217950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 36 (Thread 0x7fd364a7a700 (LWP 21779)):
 #0  0x00007fd36862ba35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd36c3c0bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x1218c28, ctx=0x1216d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x1218338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x1218338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 35 (Thread 0x7fd35ffff700 (LWP 21780)):
 #0  0x00007fd368345c3d in poll () from /lib64/libc.so.6
 #1  0x00007fd36c3b7ba8 in master_thread_run (ctx=0x1216d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19148
 #2  master_thread (thread_func_param=0x1216d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19243
 #3  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #4  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 34 (Thread 0x7fd35f7fe700 (LWP 21781)):
 #0  0x00007fd36862bde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004917e0 in __gthread_cond_timedwait (
     __abs_timeout=0x7fd35f7e51d0, __mutex=<optimized out>, 
     __cond=0x7fd367c2f0f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=<synthetic pointer>, this=0x7fd367c2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=<synthetic pointer>, this=0x7fd367c2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=<synthetic pointer>, 
     __lock=<synthetic pointer>, this=0x7fd367c2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  ExternalAuthManagerThread::run (this=0x7fd367c2f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/external_auth_manager_thread.cc:229
 #6  0x00007fd36adf520f in Couchbase::Thread::thread_entry (
     this=0x7fd367c2f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #7  0x00007fd36adea2d7 in run (this=0x7fd367c5a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #8  platform_thread_wrap (arg=0x7fd367c5a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #9  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #10 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 33 (Thread 0x7fd35ec7d700 (LWP 21782)):
 #0  0x00007fd36862bde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004efcb6 in __gthread_cond_timedwait (
     __abs_timeout=0x7fd35ec641f0, __mutex=<optimized out>, 
     __cond=0x7fd366a8e8f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7fd366a8e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7fd366a8e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1> > (__rtime=..., __lock=..., 
     this=0x7fd366a8e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  AuditImpl::consume_events (this=0x7fd366a8e500)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/auditd/src/audit.cc:414
 #6  0x00007fd36adea2d7 in run (this=0x7fd367c5a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #7  platform_thread_wrap (arg=0x7fd367c5a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #8  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #9  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 32 (Thread 0x7fd35e47c700 (LWP 21783)):
 #0  0x00007fd368350eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fd369ec23c5 in epoll_dispatch (base=0x7fd367c23300, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fd369eb9376 in event_base_loop (base=0x7fd367c23300, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fd366d4c000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fd36adea2d7 in run (this=0x7fd35ece8730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fd35ece8730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 31 (Thread 0x7fd35dc7b700 (LWP 21784)):
 #0  0x00007fd368350eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fd369ec23c5 in epoll_dispatch (base=0x7fd367c23600, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fd369eb9376 in event_base_loop (base=0x7fd367c23600, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fd366d4caa8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fd36adea2d7 in run (this=0x7fd35ece84f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fd35ece84f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 30 (Thread 0x7fd35d47a700 (LWP 21785)):
 #0  0x00007fd368350eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fd369ec23c5 in epoll_dispatch (base=0x7fd367c23900, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fd369eb9376 in event_base_loop (base=0x7fd367c23900, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fd366d4d550)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fd36adea2d7 in run (this=0x7fd35ece86d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fd35ece86d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 29 (Thread 0x7fd35cc79700 (LWP 21786)):
 #0  0x00007fd368350eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fd369ec23c5 in epoll_dispatch (base=0x7fd367c23c00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fd369eb9376 in event_base_loop (base=0x7fd367c23c00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fd366d4dff8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fd36adea2d7 in run (this=0x7fd35ece87f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fd35ece87f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 28 (Thread 0x7fd357fff700 (LWP 21787)):
 #0  0x00007fd368350eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fd369ec23c5 in epoll_dispatch (base=0x7fd367c23f00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fd369eb9376 in event_base_loop (base=0x7fd367c23f00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fd366d4eaa0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fd36adea2d7 in run (this=0x7fd35ece8670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fd35ece8670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 27 (Thread 0x7fd3577fe700 (LWP 21788)):
 #0  0x00007fd368350eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fd369ec23c5 in epoll_dispatch (base=0x7fd367c24200, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fd369eb9376 in event_base_loop (base=0x7fd367c24200, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fd366d4f548)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fd36adea2d7 in run (this=0x7fd35ece8850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fd35ece8850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 26 (Thread 0x7fd356ffd700 (LWP 21789)):
 #0  0x00007fd368350eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fd369ec23c5 in epoll_dispatch (base=0x7fd367c24500, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fd369eb9376 in event_base_loop (base=0x7fd367c24500, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fd366d4fff0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fd36adea2d7 in run (this=0x7fd35ece8610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fd35ece8610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 25 (Thread 0x7fd3567fc700 (LWP 21790)):
 #0  0x00007fd36862ba35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd368e091bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fd35edf1158)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fd35edf1158, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fd35edf1000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fd36adf520f in Couchbase::Thread::thread_entry (
     this=0x7fd35edf1000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fd36adea2d7 in run (this=0x7fd35ece8640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fd35ece8640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 24 (Thread 0x7fd355ffb700 (LWP 21791)):
 #0  0x00007fd36862ba35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd368e091bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fd35edf1318)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fd35edf1318, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fd35edf11c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fd36adf520f in Couchbase::Thread::thread_entry (
     this=0x7fd35edf11c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fd36adea2d7 in run (this=0x7fd35ece8820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fd35ece8820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 23 (Thread 0x7fd3557fa700 (LWP 21792)):
 #0  0x00007fd36862ba35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd368e091bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fd35edf14d8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fd35edf14d8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fd35edf1380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fd36adf520f in Couchbase::Thread::thread_entry (
     this=0x7fd35edf1380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fd36adea2d7 in run (this=0x7fd35ece8910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fd35ece8910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 22 (Thread 0x7fd354ff9700 (LWP 21793)):
 #0  0x00007fd36862ba35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd368e091bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fd35edf1698)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fd35edf1698, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fd35edf1540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fd36adf520f in Couchbase::Thread::thread_entry (
     this=0x7fd35edf1540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fd36adea2d7 in run (this=0x7fd35ece87c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fd35ece87c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 21 (Thread 0x7fd3547f8700 (LWP 21794)):
 #0  0x00007fd36862ba35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd368e091bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fd35edf1858)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fd35edf1858, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fd35edf1700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fd36adf520f in Couchbase::Thread::thread_entry (
     this=0x7fd35edf1700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fd36adea2d7 in run (this=0x7fd35ece8970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fd35ece8970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 20 (Thread 0x7fd353ff7700 (LWP 21795)):
 #0  0x00007fd36862ba35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd368e091bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fd35edf1a18)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fd35edf1a18, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fd35edf18c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fd36adf520f in Couchbase::Thread::thread_entry (
     this=0x7fd35edf18c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fd36adea2d7 in run (this=0x7fd35ece8760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fd35ece8760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 19 (Thread 0x7fd3537f6700 (LWP 21796)):
 #0  0x00007fd36862ba35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd368e091bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fd35edf1bd8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fd35edf1bd8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fd35edf1a80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fd36adf520f in Couchbase::Thread::thread_entry (
     this=0x7fd35edf1a80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fd36adea2d7 in run (this=0x7fd35ece8790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fd35ece8790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 18 (Thread 0x7fd350fff700 (LWP 21799)):
 #0  0x00007fd36862bde2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fd36a0fae51 in background_thread_sleep (tsdn=<optimized out>, 
     interval=1925000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=<optimized out>, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_work (ind=<optimized out>, tsd=0x7fd350fe6a60)
     at src/background_thread.c:497
 #4  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #5  0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 17 (Thread 0x7fd343fff700 (LWP 21800)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d7240)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d7240, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d7240, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd348000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd348000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb1800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd367c38cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd367c38cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d40140)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d40130)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a97440)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 16 (Thread 0x7fd3437fe700 (LWP 21801)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d71c8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d71c8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d71c8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd348000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd348000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb1800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd367c38dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd367c38dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d40190)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d40180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a974b0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 15 (Thread 0x7fd342ffd700 (LWP 21802)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d71b0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d71b0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d71b0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd348000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd348000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb1800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd367c38e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd367c38e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d401e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d401d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a97520)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 14 (Thread 0x7fd3427fc700 (LWP 21803)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d7150)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d7150, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d7150, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd348000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd348000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb1800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd367c38e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd367c38e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d40230)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d40220)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a97590)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 13 (Thread 0x7fd333fff700 (LWP 21804)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d7228)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d7228, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d7228, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd348000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd348000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb1800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd367c38ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd367c38ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d40280)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d40270)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a97600)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 12 (Thread 0x7fd3337fe700 (LWP 21805)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d7078)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d7078, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d7078, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd348000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd348000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb1800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd367c38e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd367c38e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d402d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d402c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a97670)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 11 (Thread 0x7fd332ffd700 (LWP 21806)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d7018)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d7018, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d7018, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd348000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd348000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb1800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd367c38f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd367c38f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d40320)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d40310)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a976e0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 10 (Thread 0x7fd3327fc700 (LWP 21807)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d7030)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d7030, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d7030, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd348000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd348000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb1800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd367c38f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd367c38f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d40370)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d40360)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a97750)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 9 (Thread 0x7fd331ffb700 (LWP 21808)):
 #0  0x00007fd3682e6c28 in __memcpy_sse2 () from /lib64/libc.so.6
 #1  0x00007fd3682cc6fb in __GI__IO_file_xsgetn () from /lib64/libc.so.6
 #2  0x00007fd3682c115f in fread () from /lib64/libc.so.6
 #3  0x00007fd36c11d952 in read_id_record (in=0x7fd318000fb0, 
     buf=0x7fd3503afc00, ctx=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/tree_writer.cc:234
 #4  0x00007fd36c11a0b9 in merge_sort (unsorted_file=0x7fd318000d70, 
     sorted_file=0x7fd318000d70, 
     tmp_path=0x7fd331fe0580 "/data/kv/GleamBook/824.couch.11.compact.btree-tmp_3", read=read@entry=0x7fd36c11d890 <read_id_record(FILE*, void*, void*)>, 
     write=write@entry=0x7fd36c11d980 <write_id_record(FILE*, void*, void*)>, 
     compare=compare@entry=0x7fd36c11d810 <compare_id_record(void const*, void const*, void*)>, record_alloc=0x7fd36c11d840 <alloc_record()>, 
     record_duplicate=0x7fd36c11d850 <duplicate_record(char*)>, 
     record_free=0x7fd36c11d830 <free_record(char*)>, pointer=0x7fd3640fb400, 
     block_size=512000, pcount=0x0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/mergesort.cc:222
 #5  0x00007fd36c11dc80 in TreeWriterSort (writer=0x7fd3640fb400)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/tree_writer.cc:118
 #6  0x00007fd36c10f451 in cb::couchstore::compact(Db&, char const*, unsigned long, std::function<int (Db&, DocInfo*, sized_buf)>, std::function<int (DocInfo*&, sized_buf)>, FileOpsInterface*, std::function<couchstore_error_t (Db&)>) (
     source=..., target_filename=<optimized out>, flags=flags@entry=251658242, 
     filterCallback=..., rewriteDocInfoCallback=..., 
     ops=ops@entry=0x7fd3640d19c0, precommitHook=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/db_compact.cc:188
 #7  0x00007fd36c8bbc4e in CouchKVStore::compactDBInternal (
     this=this@entry=0x7fd36413f000, sourceDb=..., compact_file=..., 
     vbLock=..., hook_ctx=0x7fd2d523ba90)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1381
 #8  0x00007fd36c8bebf4 in CouchKVStore::compactDB (this=0x7fd36413f000, 
     vbLock=..., hook_ctx=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1074
 #9  0x00007fd36c793dfe in EPBucket::compactInternal (
     this=this@entry=0x7fd36411b000, vb=..., config=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:1203
 #10 0x00007fd36c7940c1 in EPBucket::doCompact (this=0x7fd36411b000, vbid=..., 
     config=..., cookies=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:1247
 #11 0x00007fd36c84cf80 in CompactTask::run (this=0x7fd350565ed0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/tasks.cc:90
 #12 0x00007fd36c7f51b3 in GlobalTask::execute (this=0x7fd350565ed0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:75
 #13 0x00007fd36c7eed02 in operator() (__closure=0x7fd331fe2040)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
 #14 folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
 #15 0x00007fd36c96fe76 in operator() (this=0x7fd331fe2040)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
 #16 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (
     this=this@entry=0x7fd35ecb2400, thread=..., 
     task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
 #17 0x00007fd36c95836a in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb2400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
 #18 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #19 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #20 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #21 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #23 0x00007fd36c7ed488 in operator() (this=0x7fd366ff8080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #24 operator() (__closure=0x7fd366ff8080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #25 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #26 0x00007fd36c7ed363 in operator() (this=0x7fd366d40500)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #27 operator() (__closure=0x7fd366d404f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #28 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #29 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a977c0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #30 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #31 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 8 (Thread 0x7fd3317fa700 (LWP 21809)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d71e0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d71e0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d71e0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd3480024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd3480024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb2400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd366ff80c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd366ff80c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d40550)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d40540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a97830)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 7 (Thread 0x7fd330ff9700 (LWP 21810)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d7258)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d7258, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d7258, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd3480024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd3480024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb2400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd366ff8100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd366ff8100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d405a0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d40590)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a978a0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 6 (Thread 0x7fd313fff700 (LWP 21811)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d71f8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d71f8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d71f8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd3480024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd3480024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ecb2400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd366ff8180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd366ff8180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d405f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d405e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a97910)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 5 (Thread 0x7fd3137fe700 (LWP 21812)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d7138)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d7138, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d7138, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd3480033c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd3480033c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348003380, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ece1000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd366ff8240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd366ff8240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d40690)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d40680)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a97980)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 4 (Thread 0x7fd312ffd700 (LWP 21813)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d7210)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d7210, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d7210, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd348003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd348003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ece1c00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd366ff8340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd366ff8340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d40780)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d40770)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a979f0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 3 (Thread 0x7fd3127fc700 (LWP 21814)):
 #0  0x00007fd36834abf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fd36c952d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fd36c959f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fd3407d7060)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fd3407d7060, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fd36c95f9d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fd3407d7060, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fd36c95ff06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fd348003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fd36c963660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fd348003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fd348003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fd36c9582f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fd35ece1c00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fd36c7ed488 in operator() (this=0x7fd366ff8380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fd366ff8380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fd36c7ed363 in operator() (this=0x7fd366d407d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fd366d407c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a97a60)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 2 (Thread 0x7fd311ffb700 (LWP 21815)):
 #0  0x00007fd368350eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fd369ec23c5 in epoll_dispatch (base=0x7fd35ed23000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fd369eb9376 in event_base_loop (base=0x7fd35ed23000, flags=1)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00007fd36c978357 in folly::EventBase::loopBody (
     this=this@entry=0x7fd35eccd780, flags=flags@entry=0, 
     ignoreKeepAlive=ignoreKeepAlive@entry=false)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
 #4  0x00007fd36c978826 in folly::EventBase::loop (
     this=this@entry=0x7fd35eccd780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
 #5  0x00007fd36c97a1e6 in folly::EventBase::loopForever (this=0x7fd35eccd780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
 #6  0x00007fd36c9676b9 in folly::IOThreadPoolExecutor::threadRun (
     this=0x7fd35ec96780, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/IOThreadPoolExecutor.cpp:195
 #7  0x00007fd36c972f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #8  __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #10 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #11 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #12 0x00007fd368e0edcf in std::execute_native_thread_routine (
     __p=0x7fd366a97ad0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007fd368627ea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007fd3683508dd in clone () from /lib64/libc.so.6
 
 Thread 1 (Thread 0x7fd36d78a400 (LWP 21773)):
 #0  0x00007fd368350eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fd369ec23c5 in epoll_dispatch (base=0x7fd367c23000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fd369eb9376 in event_base_loop (base=0x7fd367c23000, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00000000004277a2 in memcached_main (argc=<optimized out>, 
     argv=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/memcached.cc:1535
 #4  0x00007fd368274555 in __libc_start_main () from /lib64/libc.so.6
 #5  0x000000000041fb75 in _start ()
 Detaching from program: /opt/couchbase/bin/memcached, process 21773
 [Inferior 1 (process 21773) detached]

2021-02-08 01:07:39,401 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.133: No 'sanitizers.log.*' files found
2021-02-08 01:07:39,878 | test  | DEBUG   | MainThread | [basetestcase:check_coredump_exist:720] 172.23.121.134: No crash files found
2021-02-08 01:07:40,028 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.134: No 'sanitizers.log.*' files found
2021-02-08 01:07:40,493 | test  | DEBUG   | MainThread | [basetestcase:check_coredump_exist:720] 172.23.121.135: No crash files found
2021-02-08 01:07:40,634 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.135: No 'sanitizers.log.*' files found
2021-02-08 01:07:42,762 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:711] 172.23.121.136: 11 core dump seen
Traceback (most recent call last):
  File "/opt/jython/Lib/logging/__init__.py", line 853, in emit
    msg = self.format(record)
  File "/opt/jython/Lib/logging/__init__.py", line 726, in format
    return fmt.format(record)
  File "/opt/jython/Lib/logging/__init__.py", line 469, in format
    s = self._fmt % record.__dict__
UnicodeDecodeError: 'ascii' codec can't decode byte 0xd0 in position 2382: ordinal not in range(128)
Logged from file basetestcase.py, line 712
Traceback (most recent call last):
  File "/opt/jython/Lib/logging/__init__.py", line 853, in emit
    msg = self.format(record)
  File "/opt/jython/Lib/logging/__init__.py", line 726, in format
    return fmt.format(record)
  File "/opt/jython/Lib/logging/__init__.py", line 469, in format
    s = self._fmt % record.__dict__
UnicodeDecodeError: 'ascii' codec can't decode byte 0xd0 in position 2382: ordinal not in range(128)
Logged from file basetestcase.py, line 712
Attaching to process 42148

2021-02-08 01:07:51,882 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.136: No 'sanitizers.log.*' files found
2021-02-08 01:07:52,358 | test  | DEBUG   | MainThread | [basetestcase:check_coredump_exist:720] 172.23.121.139: No crash files found
2021-02-08 01:07:52,496 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.139: No 'sanitizers.log.*' files found
2021-02-08 01:07:52,951 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:711] 172.23.121.140: 7 core dump seen
2021-02-08 01:08:02,631 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:712] 172.23.121.140: Stack Trace of first crash - 71a38a6e-359a-49ef-c9c5d78d-755093e5.dmp
Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'.
 #0  0x00007fc2e7569387 in raise () from /lib64/libc.so.6
 #0  0x00007fc2e7569387 in raise () from /lib64/libc.so.6
 No symbol table info available.
 #1  0x00007fc2e756aa78 in abort () from /lib64/libc.so.6
 No symbol table info available.
 #2  0x00007fc2e80c7195 in __gnu_cxx::__verbose_terminate_handler () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/vterminate.cc:95
         terminating = false
         t = <optimized out>
 #3  0x0000000000555bf2 in backtrace_terminate_handler () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:86
 No locals.
 #4  0x00007fc2e80c4f86 in __cxxabiv1::__terminate (handler=<optimized out>) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:47
 No locals.
 #5  0x00007fc2e80c4fd1 in std::terminate () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:57
 No locals.
 #6  0x00007fc2ebad61d3 in GlobalTask::execute (this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:78
 No locals.
 #7  0x00007fc2ebacfd02 in operator() (__closure=0x7fc27d7bf040) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
         executedAt = <optimized out>
         end = <optimized out>
         scheduleOverhead = <optimized out>
         start = {__d = {__r = 953496366726836}}
         runAgain = false
         proxy = @0x7fc29012b620: <error reading variable>
 #8  folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
         fn = @0x7fc27d7bf040: {__proxy = @0x7fc29012b620}
 #9  0x00007fc2ebc50e76 in operator() (this=0x7fc27d7bf040) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
         fn = @0x7fc27d7bf040: {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x7fc29012b620, tiny = {__data = " \266\022\220\302\177\000\000\000\000\000\000\000\000\000\000\300#.\342\302\177\000\000\200&\000\214\302\177\000\000\001\000\000\000\000\000\000\000\220\360{}\302\177\000", __align = {<No data fields>}}}, call_ = 0x7fc2ebacfc40 <folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&)>, exec_ = 0x7fc2ebacd650 <folly::detail::function::execSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Op, folly::detail::function::Data*, folly::detail::function::Data)>}
 #10 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=0x7fc2e2129400, thread=..., task=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
         rctx = {prev_ = {<std::__shared_ptr<folly::RequestContext, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<folly::RequestContext, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x0, _M_refcount = {_M_pi = 0x0}}, <No data fields>}}
         startTime = {__d = {__r = 953496366724097}}
         stats = {expired = false, waitTime = {__r = 108319}, runTime = {__r = 0}, enqueueTime = {__d = {__r = 953496366615778}}, requestId = 0}
 #11 0x00007fc2ebc3936a in folly::CPUThreadPoolExecutor::threadRun (this=0x7fc2e2129400, thread=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
         guard = {list_ = {forbid = true, prev = 0x0, curr = {name = {static npos = <optimized out>, b_ = 0x7fc2ebcb905b "CPUThreadPoolExecutor", e_ = 0x7fc2ebcb9070 ""}}}}
 #12 0x00007fc2ebc53f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 No locals.
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 No locals.
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
 No locals.
 #15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
 No locals.
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
         fn = <optimized out>
 #17 0x00007fc2ebace488 in operator() (this=0x7fc2e23fe940) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7fc2e23fe940: <error reading variable>
 #18 operator() (__closure=0x7fc2e23fe940) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
         threadNameOpt = {storage_ = {{emptyState = -112 '\220', value = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7fc27d7bf190 "WriterPool0"}, _M_string_length = 11, {_M_local_buf = "WriterPool0\000\000\000\000", _M_allocated_capacity = 8021036716417184343}}}, hasValue = true}}
         func = <error reading variable func (Cannot access memory at address 0x7fc2e23fe940)>
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7fc2e23fe940: <error reading variable>
 #20 0x00007fc2ebace363 in operator() (this=0x7fc2e6e25e60) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7fc2e6e25e60: <error reading variable>
 #21 operator() (__closure=0x7fc2e6e25e50) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
         func = <error reading variable func (Cannot access memory at address 0x7fc2e6e25e60)>
         priority = <error reading variable priority (Cannot access memory at address 0x7fc2e6e25e50)>
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7fc2e6e25e50: <error reading variable>
 #23 0x00007fc2e80efdcf in std::execute_native_thread_routine (__p=0x7fc2d82c2600) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
         __t = {_M_t = {_M_t = {<std::_Tuple_impl<0, std::thread::_State*, std::default_delete<std::thread::_State> >> = {<std::_Tuple_impl<1, std::default_delete<std::thread::_State> >> = {<std::_Head_base<1, std::default_delete<std::thread::_State>, true>> = {<std::default_delete<std::thread::_State>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, std::thread::_State*, false>> = {_M_head_impl = 0x7fc2d82c2600}, <No data fields>}, <No data fields>}}}
 #24 0x00007fc2e7908ea5 in start_thread () from /lib64/libpthread.so.0
 No symbol table info available.
 #25 0x00007fc2e76318dd in clone () from /lib64/libc.so.6
 No symbol table info available.

[Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib64/libthread_db.so.1".
 Loaded symbols for /lib64/libpthread.so.0
 Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib64/libc.so.6
 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
 Loaded symbols for /lib64/ld-linux-x86-64.so.2
 Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done.
 Loaded symbols for /lib64/librt.so.1
 0x00007f4c22033eb3 in epoll_wait () from /lib64/libc.so.6
 
 Thread 41 (Thread 0x7f4c213ff700 (LWP 64960)):
 #0  0x00007f4c2230ede2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c23dde5a7 in background_thread_sleep (tsdn=<optimized out>, 
     interval=10000000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=0, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_thread0_work (tsd=0x7f4c213e6a60)
     at src/background_thread.c:452
 #4  background_work (ind=<optimized out>, tsd=0x7f4c213e6a60)
     at src/background_thread.c:490
 #5  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #6  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 40 (Thread 0x7f4c2067e700 (LWP 64961)):
 #0  0x00007f4c2230ede2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c258068cd in __gthread_cond_timedwait (
     __abs_timeout=0x7f4c20664fa0, __mutex=<optimized out>, 
     __cond=0x7f4c2182e138)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f4c2182e138)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7f4c2182e138)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __atime=..., __lock=..., this=0x7f4c2182e138)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1, 1000>, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __rtime=<synthetic pointer>, __lock=..., 
     this=0x7f4c2182e138)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  dequeue_for (wait_duration=..., popped_item=..., this=0x7f4c2182e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/mpmc_blocking_q.h:61
 #7  spdlog::details::thread_pool::process_next_msg_ (
     this=this@entry=0x7f4c2182e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:193
 #8  0x00007f4c25806e20 in spdlog::details::thread_pool::worker_loop_ (
     this=0x7f4c2182e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:184
 #9  0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c21858c40)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #10 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 39 (Thread 0x7f4c1fe7d700 (LWP 64962)):
 #0  0x00007f4c2230ede2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c25805f8a in __gthread_cond_timedwait (
     __abs_timeout=0x7f4c1fe641f0, __mutex=<optimized out>, 
     __cond=<optimized out>)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> >
     (__p=..., __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1>, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__p=..., __rtime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  operator() (__closure=0x7f4c219ffa08)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/periodic_worker.h:38
 #7  __invoke_impl<void, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (
     __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:60
 #8  __invoke<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  _M_invoke<0> (this=0x7f4c219ffa08)
     at /usr/local/include/c++/7.3.0/thread:234
 #10 operator() (this=0x7f4c219ffa08)
     at /usr/local/include/c++/7.3.0/thread:243
 #11 _ZNSt6thread11_State_implINS_8_InvokerISt5tupleIJZN6spdlog7details15periodic_workerC4ERKSt8functionIFvvEENSt6chrono8durationIlSt5ratioILl1ELl1EEEEEUlvE_EEEEE6_M_runEv (this=0x7f4c219ffa00) at /usr/local/include/c++/7.3.0/thread:186
 #12 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c219ffa00)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 38 (Thread 0x7f4c1f67c700 (LWP 64963)):
 #0  0x00007f4c22028c3d in poll () from /lib64/libc.so.6
 #1  0x000000000046a0de in get_command (buffsize=80, buffer=0x7f4c1f6631d0 "")
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:49
 #2  check_stdin_thread (arg=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:90
 #3  0x00007f4c24acd2d7 in run (this=0x7f4c21859c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #4  platform_thread_wrap (arg=0x7f4c21859c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #5  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 37 (Thread 0x7f4c1ee7b700 (LWP 64964)):
 #0  0x00007f4c2230ea35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c260a3bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x21fe240, ctx=0x21fcd20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x21fd950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x21fd950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 36 (Thread 0x7f4c1e67a700 (LWP 64965)):
 #0  0x00007f4c2230ea35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c260a3bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x21fec28, ctx=0x21fcd20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x21fe338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x21fe338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 35 (Thread 0x7f4c1de79700 (LWP 64966)):
 #0  0x00007f4c22028c3d in poll () from /lib64/libc.so.6
 #1  0x00007f4c2609aba8 in master_thread_run (ctx=0x21fcd20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19148
 #2  master_thread (thread_func_param=0x21fcd20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19243
 #3  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #4  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 34 (Thread 0x7f4c1d678700 (LWP 64967)):
 #0  0x00007f4c2230ede2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004917e0 in __gthread_cond_timedwait (
     __abs_timeout=0x7f4c1d65f1d0, __mutex=<optimized out>, 
     __cond=0x7f4c2182f0f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=<synthetic pointer>, this=0x7f4c2182f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=<synthetic pointer>, this=0x7f4c2182f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=<synthetic pointer>, 
     __lock=<synthetic pointer>, this=0x7f4c2182f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  ExternalAuthManagerThread::run (this=0x7f4c2182f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/external_auth_manager_thread.cc:229
 #6  0x00007f4c24ad820f in Couchbase::Thread::thread_entry (
     this=0x7f4c2182f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #7  0x00007f4c24acd2d7 in run (this=0x7f4c2185a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #8  platform_thread_wrap (arg=0x7f4c2185a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #9  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #10 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 33 (Thread 0x7f4c1caf7700 (LWP 64968)):
 #0  0x00007f4c2230ede2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004efcb6 in __gthread_cond_timedwait (
     __abs_timeout=0x7f4c1cade1f0, __mutex=<optimized out>, 
     __cond=0x7f4c2068e8f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f4c2068e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7f4c2068e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1> > (__rtime=..., __lock=..., 
     this=0x7f4c2068e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  AuditImpl::consume_events (this=0x7f4c2068e500)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/auditd/src/audit.cc:414
 #6  0x00007f4c24acd2d7 in run (this=0x7f4c2185a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #7  platform_thread_wrap (arg=0x7f4c2185a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #8  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #9  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 32 (Thread 0x7f4c17fff700 (LWP 64969)):
 #0  0x00007f4c22033eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4c23ba53c5 in epoll_dispatch (base=0x7f4c21823300, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4c23b9c376 in event_base_loop (base=0x7f4c21823300, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f4c2094c000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4c24acd2d7 in run (this=0x7f4c1cb62730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4c1cb62730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 31 (Thread 0x7f4c177fe700 (LWP 64970)):
 #0  0x00007f4c22033eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4c23ba53c5 in epoll_dispatch (base=0x7f4c21823600, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4c23b9c376 in event_base_loop (base=0x7f4c21823600, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f4c2094caa8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4c24acd2d7 in run (this=0x7f4c1cb624f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4c1cb624f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 30 (Thread 0x7f4c16ffd700 (LWP 64971)):
 #0  0x00007f4c22033eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4c23ba53c5 in epoll_dispatch (base=0x7f4c21823900, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4c23b9c376 in event_base_loop (base=0x7f4c21823900, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f4c2094d550)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4c24acd2d7 in run (this=0x7f4c1cb626d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4c1cb626d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 29 (Thread 0x7f4c167fc700 (LWP 64972)):
 #0  0x00007f4c22033eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4c23ba53c5 in epoll_dispatch (base=0x7f4c21823c00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4c23b9c376 in event_base_loop (base=0x7f4c21823c00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f4c2094dff8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4c24acd2d7 in run (this=0x7f4c1cb627f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4c1cb627f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 28 (Thread 0x7f4c15ffb700 (LWP 64973)):
 #0  0x00007f4c22033eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4c23ba53c5 in epoll_dispatch (base=0x7f4c21823f00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4c23b9c376 in event_base_loop (base=0x7f4c21823f00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f4c2094eaa0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4c24acd2d7 in run (this=0x7f4c1cb62670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4c1cb62670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 27 (Thread 0x7f4c157fa700 (LWP 64974)):
 #0  0x00007f4c22033eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4c23ba53c5 in epoll_dispatch (base=0x7f4c21824200, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4c23b9c376 in event_base_loop (base=0x7f4c21824200, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f4c2094f548)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4c24acd2d7 in run (this=0x7f4c1cb62850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4c1cb62850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 26 (Thread 0x7f4c14ff9700 (LWP 64975)):
 #0  0x00007f4c22033eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4c23ba53c5 in epoll_dispatch (base=0x7f4c21824500, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4c23b9c376 in event_base_loop (base=0x7f4c21824500, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7f4c2094fff0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007f4c24acd2d7 in run (this=0x7f4c1cb62610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7f4c1cb62610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 25 (Thread 0x7f4c0ffff700 (LWP 64976)):
 #0  0x00007f4c2230ea35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c22aec1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4c1cc6b158)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4c1cc6b158, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4c1cc6b000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4c24ad820f in Couchbase::Thread::thread_entry (
     this=0x7f4c1cc6b000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4c24acd2d7 in run (this=0x7f4c1cb62640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4c1cb62640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 24 (Thread 0x7f4c0f7fe700 (LWP 64977)):
 #0  0x00007f4c2230ea35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c22aec1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4c1cc6b318)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4c1cc6b318, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4c1cc6b1c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4c24ad820f in Couchbase::Thread::thread_entry (
     this=0x7f4c1cc6b1c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4c24acd2d7 in run (this=0x7f4c1cb62820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4c1cb62820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 23 (Thread 0x7f4c0effd700 (LWP 64978)):
 #0  0x00007f4c2230ea35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c22aec1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4c1cc6b4d8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4c1cc6b4d8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4c1cc6b380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4c24ad820f in Couchbase::Thread::thread_entry (
     this=0x7f4c1cc6b380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4c24acd2d7 in run (this=0x7f4c1cb62910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4c1cb62910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 22 (Thread 0x7f4c0e7fc700 (LWP 64979)):
 #0  0x00007f4c2230ea35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c22aec1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4c1cc6b698)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4c1cc6b698, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4c1cc6b540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4c24ad820f in Couchbase::Thread::thread_entry (
     this=0x7f4c1cc6b540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4c24acd2d7 in run (this=0x7f4c1cb627c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4c1cb627c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 21 (Thread 0x7f4c0dffb700 (LWP 64980)):
 #0  0x00007f4c2230ea35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c22aec1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4c1cc6b858)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4c1cc6b858, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4c1cc6b700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4c24ad820f in Couchbase::Thread::thread_entry (
     this=0x7f4c1cc6b700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4c24acd2d7 in run (this=0x7f4c1cb62970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4c1cb62970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 20 (Thread 0x7f4c0d7fa700 (LWP 64981)):
 #0  0x00007f4c2230ea35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c22aec1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4c1cc6ba18)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4c1cc6ba18, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4c1cc6b8c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4c24ad820f in Couchbase::Thread::thread_entry (
     this=0x7f4c1cc6b8c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4c24acd2d7 in run (this=0x7f4c1cb62760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4c1cb62760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 19 (Thread 0x7f4c0cff9700 (LWP 64982)):
 #0  0x00007f4c2230ea35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c22aec1bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7f4c1cc6bbd8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7f4c1cc6bbd8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7f4c1cc6ba80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007f4c24ad820f in Couchbase::Thread::thread_entry (
     this=0x7f4c1cc6ba80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007f4c24acd2d7 in run (this=0x7f4c1cb62790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7f4c1cb62790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 18 (Thread 0x7f4c0abf7700 (LWP 64985)):
 #0  0x00007f4c2230ede2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007f4c23ddde51 in background_thread_sleep (tsdn=<optimized out>, 
     interval=10000000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=<optimized out>, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_work (ind=<optimized out>, tsd=0x7f4c0abdea60)
     at src/background_thread.c:497
 #4  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #5  0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 17 (Thread 0x7f4c0a3f6700 (LWP 64986)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db108)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db108, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db108, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c00000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c00000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c21838cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c21838cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940900)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c20697440)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 16 (Thread 0x7f4c09bf5700 (LWP 64987)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db1e0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db1e0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db1e0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c00000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c00000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c21838dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c21838dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940960)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940950)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c206974b0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 15 (Thread 0x7f4c093f4700 (LWP 64988)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db018)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db018, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db018, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c00000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c00000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c21838e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c21838e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c209409b0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c209409a0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c20697520)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 14 (Thread 0x7f4c08bf3700 (LWP 64989)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db288)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db288, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db288, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c00000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c00000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c21838e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c21838e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940a00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c209409f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c20697590)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 13 (Thread 0x7f4be7fff700 (LWP 64990)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db060)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db060, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db060, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c00000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c00000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c21838ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c21838ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940a50)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940a40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c20697600)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 12 (Thread 0x7f4bee7da700 (LWP 64991)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db270)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db270, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db270, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c00000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c00000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c21838e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c21838e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940aa0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940a90)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c20697670)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 11 (Thread 0x7f4bedfd9700 (LWP 64992)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db168)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db168, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db168, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c00000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c00000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c21838f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c21838f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940af0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940ae0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c206976e0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 10 (Thread 0x7f4bed7d8700 (LWP 64993)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db1c8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db1c8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db1c8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c00000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c00000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c21838f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c21838f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940b40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940b30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c20697750)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 9 (Thread 0x7f4becfd7700 (LWP 64994)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db1b0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db1b0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db1b0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c000024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c000024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c20bf8080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c20bf8080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940cd0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c206977c0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 8 (Thread 0x7f4be77fe700 (LWP 64995)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db240)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db240, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db240, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c000024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c000024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c20bf80c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c20bf80c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940d20)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940d10)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c20697830)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 7 (Thread 0x7f4be6ffd700 (LWP 64996)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db210)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db210, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db210, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c000024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c000024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c20bf8100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c20bf8100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940d70)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940d60)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c206978a0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 6 (Thread 0x7f4be67fc700 (LWP 64997)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db228)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db228, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db228, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c000024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c000024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb2c400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c20bf8180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c20bf8180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940db0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c20697910)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 5 (Thread 0x7f4be5ffb700 (LWP 64998)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db138)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db138, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db138, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c000033c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c000033c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00003380, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb51000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c20bf8240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c20bf8240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940e60)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940e50)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c20697980)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 4 (Thread 0x7f4be57fa700 (LWP 64999)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db2a0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db2a0, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db2a0, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c00003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c00003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb51c00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c20bf8340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c20bf8340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940f50)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c206979f0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 3 (Thread 0x7f4be4ff9700 (LWP 65000)):
 #0  0x00007f4c2202dbf9 in syscall () from /lib64/libc.so.6
 #1  0x00007f4c26635d7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007f4c2663cf8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7f4bee7db258)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7f4bee7db258, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007f4c266429d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7f4bee7db258, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007f4c26642f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f4c00003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007f4c26646660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7f4c00003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7f4c00003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007f4c2663b2f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7f4c1cb51c00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007f4c264d0488 in operator() (this=0x7f4c20bf8380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7f4c20bf8380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007f4c264d0363 in operator() (this=0x7f4c20940fa0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7f4c20940f90)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c20697a60)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 2 (Thread 0x7f4bb79ff700 (LWP 65001)):
 #0  0x00007f4c22033eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4c23ba53c5 in epoll_dispatch (base=0x7f4c1cb9d000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4c23b9c376 in event_base_loop (base=0x7f4c1cb9d000, flags=1)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00007f4c2665b357 in folly::EventBase::loopBody (
     this=this@entry=0x7f4c1cb47780, flags=flags@entry=0, 
     ignoreKeepAlive=ignoreKeepAlive@entry=false)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
 #4  0x00007f4c2665b826 in folly::EventBase::loop (
     this=this@entry=0x7f4c1cb47780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
 #5  0x00007f4c2665d1e6 in folly::EventBase::loopForever (this=0x7f4c1cb47780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
 #6  0x00007f4c2664a6b9 in folly::IOThreadPoolExecutor::threadRun (
     this=0x7f4c1cb10780, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/IOThreadPoolExecutor.cpp:195
 #7  0x00007f4c26655f99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #8  __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #10 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #11 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #12 0x00007f4c22af1dcf in std::execute_native_thread_routine (
     __p=0x7f4c20697ad0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007f4c2230aea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007f4c220338dd in clone () from /lib64/libc.so.6
 
 Thread 1 (Thread 0x7f4c2746d400 (LWP 64959)):
 #0  0x00007f4c22033eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007f4c23ba53c5 in epoll_dispatch (base=0x7f4c21823000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007f4c23b9c376 in event_base_loop (base=0x7f4c21823000, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00000000004277a2 in memcached_main (argc=<optimized out>, 
     argv=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/memcached.cc:1535
 #4  0x00007f4c21f57555 in __libc_start_main () from /lib64/libc.so.6
 #5  0x000000000041fb75 in _start ()
 Detaching from program: /opt/couchbase/bin/memcached, process 64959
 [Inferior 1 (process 64959) detached]

2021-02-08 01:08:10,562 | test  | WARNING | MainThread | [basetestcase:check_coredump_exist:739] 172.23.121.140: No 'sanitizers.log.*' files found
2021-02-08 01:08:11,019 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:711] 172.23.121.141: 16 core dump seen
2021-02-08 01:08:19,752 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:712] 172.23.121.141: Stack Trace of first crash - de94b887-cbcc-4903-5e9aa2ae-06c48cd2.dmp
Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'.
 #0  0x00007f8d845b0387 in raise () from /lib64/libc.so.6
 #0  0x00007f8d845b0387 in raise () from /lib64/libc.so.6
 No symbol table info available.
 #1  0x00007f8d845b1a78 in abort () from /lib64/libc.so.6
 No symbol table info available.
 #2  0x00007f8d8510e195 in __gnu_cxx::__verbose_terminate_handler () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/vterminate.cc:95
         terminating = false
         t = <optimized out>
 #3  0x0000000000555bf2 in backtrace_terminate_handler () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:86
 No locals.
 #4  0x00007f8d8510bf86 in __cxxabiv1::__terminate (handler=<optimized out>) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:47
 No locals.
 #5  0x00007f8d8510bfd1 in std::terminate () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:57
 No locals.
 #6  0x00007f8d88b1d1d3 in GlobalTask::execute (this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:78
 No locals.
 #7  0x00007f8d88b16d02 in operator() (__closure=0x7f8cfb7e5040) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:195
         executedAt = <optimized out>
         end = <optimized out>
         scheduleOverhead = <optimized out>
         start = {__d = {__r = 953426161564581}}
         runAgain = false
         proxy = @0x7f8d6c7d5890: <error reading variable>
 #8  folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
         fn = @0x7f8cfb7e5040: {__proxy = @0x7f8d6c7d5890}
 #9  0x00007f8d88c97e76 in operator() (this=0x7f8cfb7e5040) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
         fn = @0x7f8cfb7e5040: {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x7f8d6c7d5890, tiny = {__data = "\220X}l\215\177\000\000\000\000\000\000\000\000\000\000\340p\177l\215\177\000\000\200/\000(\215\177\000\000\001\000\000\000\000\000\000\000\220P~\373\214\177\000", __align = {<No data fields>}}}, call_ = 0x7f8d88b16c40 <folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&)>, exec_ = 0x7f8d88b14650 <folly::detail::function::execSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Op, folly::detail::function::Data*, folly::detail::function::Data)>}
 #10 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=0x7f8d80436400, thread=..., task=<unknown type in /usr/lib/debug/opt/couchbase/lib/libep.so.debug, CU 0x30bcc0a, DIE 0x3103026>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:98
         rctx = {prev_ = {<std::__shared_ptr<folly::RequestContext, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<folly::RequestContext, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x0, _M_refcount = {_M_pi = 0x0}}, <No data fields>}}
         startTime = {__d = {__r = 953426161561348}}
         stats = {expired = false, waitTime = {__r = 23059}, runTime = {__r = 0}, enqueueTime = {__d = {__r = 953426161538289}}, requestId = 0}
 #11 0x00007f8d88c8036a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8d80436400, thread=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
         guard = {list_ = {forbid = true, prev = 0x0, curr = {name = {static npos = <optimized out>, b_ = 0x7f8d88d0005b "CPUThreadPoolExecutor", e_ = 0x7f8d88d00070 ""}}}}
 #12 0x00007f8d88c9af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 No locals.
 #13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 No locals.
 #14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
 No locals.
 #15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
 No locals.
 #16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
         fn = <optimized out>
 #17 0x00007f8d88b15488 in operator() (this=0x7f8d80158b80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7f8d80158b80: <error reading variable>
 #18 operator() (__closure=0x7f8d80158b80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
         threadNameOpt = {storage_ = {{emptyState = -112 '\220', value = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7f8cfb7e5190 "WriterPool3"}, _M_string_length = 11, {_M_local_buf = "WriterPool3\000\000\000\000", _M_allocated_capacity = 8021036716417184343}}}, hasValue = true}}
         func = <error reading variable func (Cannot access memory at address 0x7f8d80158b80)>
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7f8d80158b80: <error reading variable>
 #20 0x00007f8d88b15363 in operator() (this=0x7f8d83e54ef0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
         fn = @0x7f8d83e54ef0: <error reading variable>
 #21 operator() (__closure=0x7f8d83e54ee0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
         func = <error reading variable func (Cannot access memory at address 0x7f8d83e54ef0)>
         priority = <error reading variable priority (Cannot access memory at address 0x7f8d83e54ee0)>
 #22 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
         fn = @0x7f8d83e54ee0: <error reading variable>
 #23 0x00007f8d85136dcf in std::execute_native_thread_routine (__p=0x7f8d783b9990) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
         __t = {_M_t = {_M_t = {<std::_Tuple_impl<0, std::thread::_State*, std::default_delete<std::thread::_State> >> = {<std::_Tuple_impl<1, std::default_delete<std::thread::_State> >> = {<std::_Head_base<1, std::default_delete<std::thread::_State>, true>> = {<std::default_delete<std::thread::_State>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, std::thread::_State*, false>> = {_M_head_impl = 0x7f8d783b9990}, <No data fields>}, <No data fields>}}}
 #24 0x00007f8d8494fea5 in start_thread () from /lib64/libpthread.so.0
 No symbol table info available.
 #25 0x00007f8d846788dd in clone () from /lib64/libc.so.6
 No symbol table info available.

[Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib64/libthread_db.so.1".
 Loaded symbols for /lib64/libpthread.so.0
 Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib64/libc.so.6
 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
 Loaded symbols for /lib64/ld-linux-x86-64.so.2
 Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done.
 Loaded symbols for /lib64/librt.so.1
 0x00007fce61108eb3 in epoll_wait () from /lib64/libc.so.6
 
 Thread 41 (Thread 0x7fce605ff700 (LWP 59652)):
 #0  0x00007fce613e3de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce62eb35a7 in background_thread_sleep (tsdn=<optimized out>, 
     interval=10000000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=0, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_thread0_work (tsd=0x7fce605e6a60)
     at src/background_thread.c:452
 #4  background_work (ind=<optimized out>, tsd=0x7fce605e6a60)
     at src/background_thread.c:490
 #5  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #6  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 40 (Thread 0x7fce5f87e700 (LWP 59653)):
 #0  0x00007fce613e3de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce648db8cd in __gthread_cond_timedwait (
     __abs_timeout=0x7fce5f864fa0, __mutex=<optimized out>, 
     __cond=0x7fce60a2e138)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7fce60a2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7fce60a2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __atime=..., __lock=..., this=0x7fce60a2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1, 1000>, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __rtime=<synthetic pointer>, __lock=..., 
     this=0x7fce60a2e138)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  dequeue_for (wait_duration=..., popped_item=..., this=0x7fce60a2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/mpmc_blocking_q.h:61
 #7  spdlog::details::thread_pool::process_next_msg_ (
     this=this@entry=0x7fce60a2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:193
 #8  0x00007fce648dbe20 in spdlog::details::thread_pool::worker_loop_ (
     this=0x7fce60a2e110)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:184
 #9  0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce60a58c40)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #10 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 39 (Thread 0x7fce5f07d700 (LWP 59654)):
 #0  0x00007fce613e3de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce648daf8a in __gthread_cond_timedwait (
     __abs_timeout=0x7fce5f0641f0, __mutex=<optimized out>, 
     __cond=<optimized out>)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> >
     (__p=..., __atime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:129
 #5  wait_for<long int, std::ratio<1>, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__p=..., __rtime=..., __lock=..., this=<optimized out>)
     at /usr/local/include/c++/7.3.0/condition_variable:145
 #6  operator() (__closure=0x7fce60bffa08)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/periodic_worker.h:38
 #7  __invoke_impl<void, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (
     __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:60
 #8  __invoke<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  _M_invoke<0> (this=0x7fce60bffa08)
     at /usr/local/include/c++/7.3.0/thread:234
 #10 operator() (this=0x7fce60bffa08)
     at /usr/local/include/c++/7.3.0/thread:243
 #11 _ZNSt6thread11_State_implINS_8_InvokerISt5tupleIJZN6spdlog7details15periodic_workerC4ERKSt8functionIFvvEENSt6chrono8durationIlSt5ratioILl1ELl1EEEEEUlvE_EEEEE6_M_runEv (this=0x7fce60bffa00) at /usr/local/include/c++/7.3.0/thread:186
 #12 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce60bffa00)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 38 (Thread 0x7fce5e87c700 (LWP 59655)):
 #0  0x00007fce610fdc3d in poll () from /lib64/libc.so.6
 #1  0x000000000046a0de in get_command (buffsize=80, buffer=0x7fce5e8631d0 "")
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:49
 #2  check_stdin_thread (arg=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:90
 #3  0x00007fce63ba22d7 in run (this=0x7fce60a59c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #4  platform_thread_wrap (arg=0x7fce60a59c30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #5  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 37 (Thread 0x7fce5e07b700 (LWP 59656)):
 #0  0x00007fce613e3a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce65178bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x1ae4240, ctx=0x1ae2d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x1ae3950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x1ae3950)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 36 (Thread 0x7fce5d87a700 (LWP 59657)):
 #0  0x00007fce613e3a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce65178bfb in consume_socket (thread_index=<optimized out>, 
     sp=0x1ae4c28, ctx=0x1ae2d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18718
 #2  worker_thread_run (conn=0x1ae4338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18859
 #3  worker_thread (thread_func_param=0x1ae4338)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19002
 #4  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 35 (Thread 0x7fce5d079700 (LWP 59658)):
 #0  0x00007fce610fdc3d in poll () from /lib64/libc.so.6
 #1  0x00007fce6516fba8 in master_thread_run (ctx=0x1ae2d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19148
 #2  master_thread (thread_func_param=0x1ae2d20)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19243
 #3  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #4  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 34 (Thread 0x7fce5c878700 (LWP 59659)):
 #0  0x00007fce613e3de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004917e0 in __gthread_cond_timedwait (
     __abs_timeout=0x7fce5c85f1d0, __mutex=<optimized out>, 
     __cond=0x7fce60a2f0f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=<synthetic pointer>, this=0x7fce60a2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=<synthetic pointer>, this=0x7fce60a2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=<synthetic pointer>, 
     __lock=<synthetic pointer>, this=0x7fce60a2f0f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  ExternalAuthManagerThread::run (this=0x7fce60a2f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/external_auth_manager_thread.cc:229
 #6  0x00007fce63bad20f in Couchbase::Thread::thread_entry (
     this=0x7fce60a2f000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #7  0x00007fce63ba22d7 in run (this=0x7fce60a5a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #8  platform_thread_wrap (arg=0x7fce60a5a380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #9  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #10 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 33 (Thread 0x7fce57c7f700 (LWP 59660)):
 #0  0x00007fce613e3de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000004efcb6 in __gthread_cond_timedwait (
     __abs_timeout=0x7fce57c661f0, __mutex=<optimized out>, 
     __cond=0x7fce5f88e8f8)
     at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7fce5f88e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:166
 #3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (
     __atime=..., __lock=..., this=0x7fce5f88e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:106
 #4  wait_for<long, std::ratio<1> > (__rtime=..., __lock=..., 
     this=0x7fce5f88e8f8)
     at /usr/local/include/c++/7.3.0/condition_variable:138
 #5  AuditImpl::consume_events (this=0x7fce5f88e500)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/auditd/src/audit.cc:414
 #6  0x00007fce63ba22d7 in run (this=0x7fce60a5a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #7  platform_thread_wrap (arg=0x7fce60a5a0e0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #8  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #9  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 32 (Thread 0x7fce5747e700 (LWP 59661)):
 #0  0x00007fce61108eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fce62c7a3c5 in epoll_dispatch (base=0x7fce60a23300, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fce62c71376 in event_base_loop (base=0x7fce60a23300, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fce5fb4c000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fce63ba22d7 in run (this=0x7fce57cea730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fce57cea730)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 31 (Thread 0x7fce56c7d700 (LWP 59662)):
 #0  0x00007fce61108eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fce62c7a3c5 in epoll_dispatch (base=0x7fce60a23600, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fce62c71376 in event_base_loop (base=0x7fce60a23600, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fce5fb4caa8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fce63ba22d7 in run (this=0x7fce57cea4f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fce57cea4f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 30 (Thread 0x7fce5647c700 (LWP 59663)):
 #0  0x00007fce61108eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fce62c7a3c5 in epoll_dispatch (base=0x7fce60a23900, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fce62c71376 in event_base_loop (base=0x7fce60a23900, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fce5fb4d550)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fce63ba22d7 in run (this=0x7fce57cea6d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fce57cea6d0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 29 (Thread 0x7fce55c7b700 (LWP 59664)):
 #0  0x00007fce61108eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fce62c7a3c5 in epoll_dispatch (base=0x7fce60a23c00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fce62c71376 in event_base_loop (base=0x7fce60a23c00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fce5fb4dff8)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fce63ba22d7 in run (this=0x7fce57cea7f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fce57cea7f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 28 (Thread 0x7fce5547a700 (LWP 59665)):
 #0  0x00007fce61108eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fce62c7a3c5 in epoll_dispatch (base=0x7fce60a23f00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fce62c71376 in event_base_loop (base=0x7fce60a23f00, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fce5fb4eaa0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fce63ba22d7 in run (this=0x7fce57cea670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fce57cea670)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 27 (Thread 0x7fce54c79700 (LWP 59666)):
 #0  0x00007fce61108eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fce62c7a3c5 in epoll_dispatch (base=0x7fce60a24200, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fce62c71376 in event_base_loop (base=0x7fce60a24200, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fce5fb4f548)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fce63ba22d7 in run (this=0x7fce57cea850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fce57cea850)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 26 (Thread 0x7fce4ffff700 (LWP 59667)):
 #0  0x00007fce61108eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fce62c7a3c5 in epoll_dispatch (base=0x7fce60a24500, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fce62c71376 in event_base_loop (base=0x7fce60a24500, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x000000000046ace9 in worker_libevent (arg=0x7fce5fb4fff0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:195
 #4  0x00007fce63ba22d7 in run (this=0x7fce57cea610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap (arg=0x7fce57cea610)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 25 (Thread 0x7fce4f7fe700 (LWP 59668)):
 #0  0x00007fce613e3a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce61bc11bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fce57df3158)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fce57df3158, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fce57df3000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fce63bad20f in Couchbase::Thread::thread_entry (
     this=0x7fce57df3000)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fce63ba22d7 in run (this=0x7fce57cea640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fce57cea640)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 24 (Thread 0x7fce4effd700 (LWP 59669)):
 #0  0x00007fce613e3a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce61bc11bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fce57df3318)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fce57df3318, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fce57df31c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fce63bad20f in Couchbase::Thread::thread_entry (
     this=0x7fce57df31c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fce63ba22d7 in run (this=0x7fce57cea820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fce57cea820)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 23 (Thread 0x7fce4e7fc700 (LWP 59670)):
 #0  0x00007fce613e3a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce61bc11bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fce57df34d8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fce57df34d8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fce57df3380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fce63bad20f in Couchbase::Thread::thread_entry (
     this=0x7fce57df3380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fce63ba22d7 in run (this=0x7fce57cea910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fce57cea910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 22 (Thread 0x7fce4dffb700 (LWP 59671)):
 #0  0x00007fce613e3a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce61bc11bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fce57df3698)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fce57df3698, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fce57df3540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fce63bad20f in Couchbase::Thread::thread_entry (
     this=0x7fce57df3540)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fce63ba22d7 in run (this=0x7fce57cea7c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fce57cea7c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 21 (Thread 0x7fce4d7fa700 (LWP 59672)):
 #0  0x00007fce613e3a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce61bc11bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fce57df3858)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fce57df3858, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fce57df3700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fce63bad20f in Couchbase::Thread::thread_entry (
     this=0x7fce57df3700)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fce63ba22d7 in run (this=0x7fce57cea970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fce57cea970)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 20 (Thread 0x7fce4cff9700 (LWP 59673)):
 #0  0x00007fce613e3a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce61bc11bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fce57df3a18)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fce57df3a18, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fce57df38c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fce63bad20f in Couchbase::Thread::thread_entry (
     this=0x7fce57df38c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fce63ba22d7 in run (this=0x7fce57cea760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fce57cea760)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 19 (Thread 0x7fce4c7f8700 (LWP 59674)):
 #0  0x00007fce613e3a35 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce61bc11bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fce57df3bd8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
 #2  std::condition_variable::wait (this=this@entry=0x7fce57df3bd8, __lock=...)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000004a2051 in Executor::run (this=0x7fce57df3a80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:44
 #4  0x00007fce63bad20f in Couchbase::Thread::thread_entry (
     this=0x7fce57df3a80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fce63ba22d7 in run (this=0x7fce57cea790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap (arg=0x7fce57cea790)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 18 (Thread 0x7fce4a3f6700 (LWP 59677)):
 #0  0x00007fce613e3de2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fce62eb2e51 in background_thread_sleep (tsdn=<optimized out>, 
     interval=10000000000, info=<optimized out>) at src/background_thread.c:255
 #2  background_work_sleep_once (ind=<optimized out>, info=<optimized out>, 
     tsdn=<optimized out>) at src/background_thread.c:307
 #3  background_work (ind=<optimized out>, tsd=0x7fce4a3dda60)
     at src/background_thread.c:497
 #4  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #5  0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 17 (Thread 0x7fce499f5700 (LWP 59678)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db078)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db078, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db078, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce40000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce40000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb3800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce60a38cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce60a38cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40910)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40900)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f897440)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 16 (Thread 0x7fce491f4700 (LWP 59679)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db240)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db240, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db240, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce40000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce40000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb3800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce60a38dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce60a38dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40960)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40950)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f8974b0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 15 (Thread 0x7fce489f3700 (LWP 59680)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db270)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db270, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db270, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce40000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce40000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb3800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce60a38e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce60a38e00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb409b0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb409a0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f897520)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 14 (Thread 0x7fce2e7da700 (LWP 59681)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db168)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db168, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db168, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce40000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce40000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb3800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce60a38e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce60a38e80)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40a00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb409f0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f897590)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 13 (Thread 0x7fce2dfd9700 (LWP 59682)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db1c8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db1c8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db1c8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce40000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce40000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb3800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce60a38ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce60a38ec0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40a50)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40a40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f897600)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 12 (Thread 0x7fce2d7d8700 (LWP 59683)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db1f8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db1f8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db1f8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce40000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce40000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb3800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce60a38e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce60a38e40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40aa0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40a90)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f897670)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 11 (Thread 0x7fce2cfd7700 (LWP 59684)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db180)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db180, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db180, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce40000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce40000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb3800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce60a38f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce60a38f00)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40af0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40ae0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f8976e0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 10 (Thread 0x7fce1ffff700 (LWP 59685)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db0d8)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db0d8, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db0d8, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce40000a40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce40000a40)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40000a00, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb3800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce60a38f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce60a38f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40b40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40b30)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f897750)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 9 (Thread 0x7fce1f7fe700 (LWP 59686)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db120)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db120, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db120, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce400024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce400024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb4400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce5fdf8080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce5fdf8080)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40cd0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40cc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f8977c0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 8 (Thread 0x7fce1effd700 (LWP 59687)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db060)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db060, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db060, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce400024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce400024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb4400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce5fdf80c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce5fdf80c0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40d20)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40d10)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f897830)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 7 (Thread 0x7fce1e7fc700 (LWP 59688)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db090)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db090, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db090, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce400024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce400024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb4400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce5fdf8100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce5fdf8100)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40d70)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40d60)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f8978a0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 6 (Thread 0x7fce1dffb700 (LWP 59689)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db210)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db210, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db210, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce400024c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce400024c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40002480, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cb4400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce5fdf8180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce5fdf8180)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40dc0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40db0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f897910)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 5 (Thread 0x7fce1d7fa700 (LWP 59690)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db138)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db138, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db138, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce400033c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce400033c0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40003380, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cde000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce5fdf8240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce5fdf8240)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40e60)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40e50)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f897980)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 4 (Thread 0x7fce1cff9700 (LWP 59691)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db228)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db228, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db228, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce40003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce40003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cdec00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce5fdf8340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce5fdf8340)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40f50)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40f40)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f8979f0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 3 (Thread 0x7fcdfbfff700 (LWP 59692)):
 #0  0x00007fce61102bf9 in syscall () from /lib64/libc.so.6
 #1  0x00007fce6570ad7d in nativeFutexWaitImpl (waitMask=<optimized out>, 
     absSteadyTime=<optimized out>, absSystemTime=<optimized out>, 
     expected=<optimized out>, addr=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
 #2  folly::detail::futexWaitImpl (futex=<optimized out>, 
     expected=<optimized out>, absSystemTime=<optimized out>, 
     absSteadyTime=<optimized out>, waitMask=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
 #3  0x00007fce65711f8a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., 
     expected=2, futex=0x7fce2e7db258)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
 #4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     futex=futex@entry=0x7fce2e7db258, expected=expected@entry=2, 
     deadline=..., waitMask=waitMask@entry=4294967295)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
 #5  0x00007fce657179d7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=..., 
     _ret=<synthetic pointer>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
 #6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
     waitMask=4294967295, deadline=..., expected=2, fut=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
 #7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (
     this=this@entry=0x7fce2e7db258, deadline=..., opt=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
 #8  0x00007fce65717f06 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., 
     this=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
 #9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7fce40003940, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x00007fce6571b660 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fce40003940)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
 #11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x7fce40003900, time=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
 #12 0x00007fce657102f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fce57cdec00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #16 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #18 0x00007fce655a5488 in operator() (this=0x7fce5fdf8380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #19 operator() (__closure=0x7fce5fdf8380)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:54
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fce655a5363 in operator() (this=0x7fce5fb40fa0)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:416
 #22 operator() (__closure=0x7fce5fb40f90)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/executors/thread_factory/PriorityThreadFactory.h:54
 #23 folly::detail::function::FunctionTraits<void ()>::callBig<folly::PriorityThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #24 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f897a60)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #25 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #26 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 2 (Thread 0x7fcdfafff700 (LWP 59693)):
 #0  0x00007fce61108eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fce62c7a3c5 in epoll_dispatch (base=0x7fce57d25000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fce62c71376 in event_base_loop (base=0x7fce57d25000, flags=1)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00007fce65730357 in folly::EventBase::loopBody (
     this=this@entry=0x7fce57ccf780, flags=flags@entry=0, 
     ignoreKeepAlive=ignoreKeepAlive@entry=false)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
 #4  0x00007fce65730826 in folly::EventBase::loop (
     this=this@entry=0x7fce57ccf780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
 #5  0x00007fce657321e6 in folly::EventBase::loopForever (this=0x7fce57ccf780)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
 #6  0x00007fce6571f6b9 in folly::IOThreadPoolExecutor::threadRun (
     this=0x7fce57c98780, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/IOThreadPoolExecutor.cpp:195
 #7  0x00007fce6572af99 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (
     __t=<optimized out>, __f=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:73
 #8  __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
     at /usr/local/include/c++/7.3.0/bits/invoke.h:95
 #9  __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:467
 #10 operator()<> (this=<optimized out>)
     at /usr/local/include/c++/7.3.0/functional:551
 #11 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
 #12 0x00007fce61bc6dcf in std::execute_native_thread_routine (
     __p=0x7fce5f897ad0)
     at /tmp/deploy/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
 #13 0x00007fce613dfea5 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007fce611088dd in clone () from /lib64/libc.so.6
 
 Thread 1 (Thread 0x7fce66542400 (LWP 59651)):
 #0  0x00007fce61108eb3 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fce62c7a3c5 in epoll_dispatch (base=0x7fce60a23000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fce62c71376 in event_base_loop (base=0x7fce60a23000, 
     flags=flags@entry=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00000000004277a2 in memcached_main (argc=<optimized out>, 
     argv=<optimized out>)
     at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/memcached.cc:1535
 #4  0x00007fce6102c555 in __libc_start_main () from /lib64/libc.so.6
 #5  0x000000000041fb75 in _start ()
 Detaching from program: /opt/couchbase/bin/memcached, process 59651
 [Inferior 1 (process 59651) detached]