gdb -p `(pidof memcached)` -ex "thread apply all bt" -ex detach -ex quit
[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
 0x00007fa03906fe63 in epoll_wait () from /lib64/libc.so.6
 To enable execution of this file add
 	add-auto-load-safe-path /opt/couchbase/lib/libstdc++.so.6.0.28-gdb.py
 line to your configuration file "/root/.gdbinit".
 To completely disable this security protection add
 	set auto-load safe-path /
 line to your configuration file "/root/.gdbinit".
 For more information about this security protection see the
 "Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
 	info "(gdb)Auto-loading safe path"
 
 Thread 31 (Thread 0x7fa0383ff700 (LWP 112190)):
 #0  0x00007fa03934ada2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fa03ae675a7 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=0x7fa0383ee000)
     at src/background_thread.c:452
 #4  background_work (ind=<optimized out>, tsd=0x7fa0383ee000)
     at src/background_thread.c:490
 #5  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #6  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 30 (Thread 0x7fa03767e700 (LWP 112191)):
 #0  0x00007fa03934ada2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x0000000000a82ef5 in __gthread_cond_timedwait (
     __abs_timeout=0x7fa03766c560, __mutex=<optimized out>, 
     __cond=0x7fa038812638)
     at /opt/gcc-10.2.0/include/c++/10.2.0/x86_64-pc-linux-gnu/bits/gthr-default.h:872
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__lock=..., __lock=..., __atime=<synthetic pointer>, this=0x7fa038812638)
     at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:232
 #3  wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7fa038812638)
     at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:141
 #4  wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::mpmc_blocking_queue<T>::dequeue_for<spdlog::details::async_msg>::<lambda()> > (__p=..., __atime=..., 
     __lock=..., this=0x7fa038812638)
     at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:158
 #5  wait_for<long int, std::ratio<1, 1000>, spdlog::details::mpmc_blocking_queue<T>::dequeue_for<spdlog::details::async_msg>::<lambda()> > (
     __rtime=<synthetic pointer>, __rtime=<synthetic pointer>, __p=..., 
     __lock=..., this=0x7fa038812638)
     at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:185
 #6  dequeue_for (wait_duration=..., popped_item=..., this=0x7fa038812610)
     at /tmp/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=0x7fa038812610)
     at /tmp/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:193
 #8  0x0000000000a83510 in spdlog::details::thread_pool::worker_loop_ (
     this=0x7fa038812610)
     at /tmp/workspace/couchbase-server-unix/third_party/spdlog/include/spdlog/details/thread_pool.h:184
 #9  0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #10 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 29 (Thread 0x7fa036e7d700 (LWP 112192)):
 #0  0x00007fa03934ada2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x0000000000a826ab in __gthread_cond_timedwait (
     __abs_timeout=0x7fa036e6b7b0, __mutex=<optimized out>, 
     __cond=<optimized out>)
     at /opt/gcc-10.2.0/include/c++/10.2.0/x86_64-pc-linux-gnu/bits/gthr-default.h:872
 #2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__lock=..., __lock=..., __atime=<synthetic pointer>, this=<optimized out>)
     at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:232
 #3  wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=<optimized out>)
     at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:141
 #4  wait_until<std::chrono::_V2::steady_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 /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:158
 #5  wait_for<long int, std::ratio<1>, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__rtime=..., __rtime=..., __p=..., __lock=..., this=<optimized out>)
     at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:185
 #6  operator() (__closure=0x7fa037a68788)
     at /tmp/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=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached.debug, CU 0x7ef0377, DIE 0x7f1fb80>)
     at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:60
 #8  __invoke<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (
     __fn=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached.debug, CU 0x7ef0377, DIE 0x7f1fb60>)
     at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:95
 #9  _M_invoke<0> (this=0x7fa037a68788)
     at /opt/gcc-10.2.0/include/c++/10.2.0/thread:264
 #10 operator() (this=0x7fa037a68788)
     at /opt/gcc-10.2.0/include/c++/10.2.0/thread:271
 #11 _ZNSt6thread11_State_implINS_8_InvokerISt5tupleIJZN6spdlog7details15periodic_workerC4ERKSt8functionIFvvEENSt6chrono8durationIlSt5ratioILl1ELl1EEEEEUlvE_EEEEE6_M_runEv (this=0x7fa037a68780)
     at /opt/gcc-10.2.0/include/c++/10.2.0/thread:215
 #12 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #13 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 28 (Thread 0x7fa03667c700 (LWP 112193)):
 #0  0x00007fa039064bed in poll () from /lib64/libc.so.6
 #1  0x0000000000585b11 in get_command (buffsize=80, 
     buffer=0x7fa03666a790 "@֓;\240\177")
     at /tmp/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:57
 #2  check_stdin_thread (arg=<optimized out>)
     at /tmp/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:98
 #3  0x00007fa03b972bd9 in run (this=0x7fa037a64360)
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #4  platform_thread_wrap(void*) ()
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #5  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 27 (Thread 0x7fa035e7b700 (LWP 112194)):
 #0  0x00007fa03934a9f5 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000008c856b in consume_socket (thread_index=<optimized out>, 
     sp=0x2d96120, ctx=0x2d94c00)
     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:18846
 #2  worker_thread_run (conn=0x2d95830)
     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:18987
 #3  worker_thread (thread_func_param=0x2d95830)
     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:19145
 #4  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 26 (Thread 0x7fa03567a700 (LWP 112195)):
 #0  0x00007fa03934a9f5 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000008c856b in consume_socket (thread_index=<optimized out>, 
     sp=0x2d96b08, ctx=0x2d94c00)
     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:18846
 #2  worker_thread_run (conn=0x2d96218)
     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:18987
 #3  worker_thread (thread_func_param=0x2d96218)
     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:19145
 #4  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 25 (Thread 0x7fa034e79700 (LWP 112196)):
 #0  0x00007fa039064bed in poll () from /lib64/libc.so.6
 #1  0x00000000008bf4d8 in master_thread_run (ctx=0x2d94c00)
     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:19291
 #2  master_thread (thread_func_param=0x2d94c00)
     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:19386
 #3  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #4  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 24 (Thread 0x7fa02ffff700 (LWP 112197)):
 #0  0x00007fa03934ada2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000005b6756 in ExternalAuthManagerThread::run() ()
     at /opt/gcc-10.2.0/include/c++/10.2.0/x86_64-pc-linux-gnu/bits/gthr-default.h:872
 #2  0x00007fa03b983133 in Couchbase::Thread::thread_entry() ()
     at /tmp/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #3  0x00007fa03b972bd9 in run (this=0x7fa037a64ab0)
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #4  platform_thread_wrap(void*) ()
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #5  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 23 (Thread 0x7fa02f7fe700 (LWP 112198)):
 #0  0x00007fa03934ada2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x0000000000624e57 in AuditImpl::consume_events() ()
     at /opt/gcc-10.2.0/include/c++/10.2.0/x86_64-pc-linux-gnu/bits/gthr-default.h:872
 #2  0x00007fa03b972bd9 in run (this=0x7fa037a64810)
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #3  platform_thread_wrap(void*) ()
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #4  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 22 (Thread 0x7fa02effd700 (LWP 112199)):
 #0  0x00007fa03906fe63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fa03ac2e3c5 in epoll_dispatch (base=0x7fa037ae9300, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fa03ac25376 in event_base_loop (base=0x7fa037ae9300, 
     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  0x000000000058609b in worker_libevent (arg=0x7fa037af4000)
     at /tmp/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:202
 #4  0x00007fa03b972bd9 in run (this=0x7fa037b56bc0)
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap(void*) ()
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 21 (Thread 0x7fa02e7fc700 (LWP 112200)):
 #0  0x00007fa03906fe63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fa03ac2e3c5 in epoll_dispatch (base=0x7fa037ae9600, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fa03ac25376 in event_base_loop (base=0x7fa037ae9600, 
     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  0x000000000058609b in worker_libevent (arg=0x7fa037af4aa8)
     at /tmp/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:202
 #4  0x00007fa03b972bd9 in run (this=0x7fa037b56bf0)
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap(void*) ()
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 20 (Thread 0x7fa02dffb700 (LWP 112201)):
 #0  0x00007fa03906fe63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fa03ac2e3c5 in epoll_dispatch (base=0x7fa037ae9900, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fa03ac25376 in event_base_loop (base=0x7fa037ae9900, 
     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  0x000000000058609b in worker_libevent (arg=0x7fa037af5550)
     at /tmp/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:202
 #4  0x00007fa03b972bd9 in run (this=0x7fa037b56b60)
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap(void*) ()
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 19 (Thread 0x7fa02d7fa700 (LWP 112202)):
 #0  0x00007fa03906fe63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fa03ac2e3c5 in epoll_dispatch (base=0x7fa037ae9c00, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fa03ac25376 in event_base_loop (base=0x7fa037ae9c00, 
     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  0x000000000058609b in worker_libevent (arg=0x7fa037af5ff8)
     at /tmp/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:202
 #4  0x00007fa03b972bd9 in run (this=0x7fa037b56c80)
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #5  platform_thread_wrap(void*) ()
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #6  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #7  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 18 (Thread 0x7fa02cff9700 (LWP 112203)):
 #0  0x00007fa03934a9f5 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fa039b3d8bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fa037920158)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
 #2  std::condition_variable::wait (this=this@entry=0x7fa037920158, __lock=...)
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000005c9681 in Executor::run() ()
     at /tmp/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:38
 #4  0x00007fa03b983133 in Couchbase::Thread::thread_entry() ()
     at /tmp/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fa03b972bd9 in run (this=0x7fa037b56b00)
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap(void*) ()
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 17 (Thread 0x7fa027fff700 (LWP 112204)):
 #0  0x00007fa03934a9f5 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fa039b3d8bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fa037920318)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
 #2  std::condition_variable::wait (this=this@entry=0x7fa037920318, __lock=...)
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000005c9681 in Executor::run() ()
     at /tmp/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:38
 #4  0x00007fa03b983133 in Couchbase::Thread::thread_entry() ()
     at /tmp/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fa03b972bd9 in run (this=0x7fa037b56ce0)
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap(void*) ()
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 16 (Thread 0x7fa0277fe700 (LWP 112205)):
 #0  0x00007fa03934a9f5 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fa039b3d8bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fa0379204d8)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
 #2  std::condition_variable::wait (this=this@entry=0x7fa0379204d8, __lock=...)
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000005c9681 in Executor::run() ()
     at /tmp/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:38
 #4  0x00007fa03b983133 in Couchbase::Thread::thread_entry() ()
     at /tmp/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fa03b972bd9 in run (this=0x7fa037b56d10)
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap(void*) ()
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 15 (Thread 0x7fa026ffd700 (LWP 112206)):
 #0  0x00007fa03934a9f5 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fa039b3d8bc in __gthread_cond_wait (__mutex=<optimized out>, 
     __cond=__cond@entry=0x7fa037920698)
     at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
 #2  std::condition_variable::wait (this=this@entry=0x7fa037920698, __lock=...)
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
 #3  0x00000000005c9681 in Executor::run() ()
     at /tmp/workspace/couchbase-server-unix/kv_engine/daemon/executor.cc:38
 #4  0x00007fa03b983133 in Couchbase::Thread::thread_entry() ()
     at /tmp/workspace/couchbase-server-unix/platform/src/thread.cc:45
 #5  0x00007fa03b972bd9 in run (this=0x7fa037b56ad0)
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
 #6  platform_thread_wrap(void*) ()
     at /tmp/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
 #7  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #8  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 14 (Thread 0x7fa024bfb700 (LWP 112208)):
 #0  0x00007fa03934a9f5 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fa03ae66fa2 in background_thread_sleep (tsdn=<optimized out>, 
     interval=<optimized out>, info=<optimized out>)
     at src/background_thread.c:232
 #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=0x7fa024bea000)
     at src/background_thread.c:497
 #4  background_thread_entry (ind_arg=<optimized out>)
     at src/background_thread.c:522
 #5  0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #6  0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 13 (Thread 0x7f9ffffff700 (LWP 112209)):
 #0  0x00007fa039069ba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000ab949d 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  0x0000000000ac075a 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=0x7f9ffc7d7168)
     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=0x7f9ffc7d7168, 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  0x0000000000ac669d 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=0x7f9ffc7d7168, 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  0x0000000000ac6d06 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=0x7fa004000e40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x0000000000aca460 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fa004000e40)
     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=0x7fa004000e00, 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 0x0000000000abe8f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fa03416f400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x0000000000ad9c49 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 0x00000000006957bd in operator() (this=0x7fa03421fbc0)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #18 operator() (__closure=0x7fa03421fbc0)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /tmp/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #21 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #22 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 12 (Thread 0x7f9fff7fe700 (LWP 112210)):
 #0  0x00007fa039069ba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000ab949d 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  0x0000000000ac075a 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=0x7f9ffc7d7018)
     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=0x7f9ffc7d7018, 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  0x0000000000ac669d 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=0x7f9ffc7d7018, 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  0x0000000000ac6d06 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=0x7fa004000e40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x0000000000aca460 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fa004000e40)
     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=0x7fa004000e00, 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 0x0000000000abe8f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fa03416f400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x0000000000ad9c49 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 0x00000000006957bd in operator() (this=0x7fa03421fc00)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #18 operator() (__closure=0x7fa03421fc00)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /tmp/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #21 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #22 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 11 (Thread 0x7f9ffeffd700 (LWP 112211)):
 #0  0x00007fa039069ba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000ab949d 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  0x0000000000ac075a 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=0x7f9ffc7d7108)
     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=0x7f9ffc7d7108, 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  0x0000000000ac669d 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=0x7f9ffc7d7108, 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  0x0000000000ac6d06 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=0x7fa004000e40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x0000000000aca460 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fa004000e40)
     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=0x7fa004000e00, 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 0x0000000000abe8f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fa03416f400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x0000000000ad9c49 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 0x00000000006957bd in operator() (this=0x7fa03421fc40)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #18 operator() (__closure=0x7fa03421fc40)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /tmp/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #21 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #22 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 10 (Thread 0x7f9ffe7fc700 (LWP 112212)):
 #0  0x00007fa039069ba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000ab949d 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  0x0000000000ac075a 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=0x7f9ffc7d7180)
     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=0x7f9ffc7d7180, 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  0x0000000000ac669d 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=0x7f9ffc7d7180, 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  0x0000000000ac6d06 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=0x7fa004000e40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x0000000000aca460 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fa004000e40)
     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=0x7fa004000e00, 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 0x0000000000abe8f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fa03416f400, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x0000000000ad9c49 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 0x00000000006957bd in operator() (this=0x7fa03421fcc0)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #18 operator() (__closure=0x7fa03421fcc0)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /tmp/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #21 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #22 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 9 (Thread 0x7f9febfff700 (LWP 112213)):
 #0  0x00007fa039069ba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000ab949d 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  0x0000000000ac075a 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=0x7f9ffc7d7318)
     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=0x7f9ffc7d7318, 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  0x0000000000ac669d 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=0x7f9ffc7d7318, 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  0x0000000000ac6d06 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=0x7fa004001b40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x0000000000aca460 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fa004001b40)
     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=0x7fa004001b00, 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 0x0000000000abe8f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fa03426a000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x0000000000ad9c49 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 0x00000000006957bd in operator() (this=0x7fa03421fdc0)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #18 operator() (__closure=0x7fa03421fdc0)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /tmp/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #21 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #22 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 8 (Thread 0x7f9feb7fe700 (LWP 112214)):
 #0  0x00007fa039069ba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000ab949d 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  0x0000000000ac075a 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=0x7f9ffc7d7300)
     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=0x7f9ffc7d7300, 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  0x0000000000ac669d 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=0x7f9ffc7d7300, 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  0x0000000000ac6d06 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=0x7fa004001b40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x0000000000aca460 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fa004001b40)
     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=0x7fa004001b00, 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 0x0000000000abe8f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fa03426a000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x0000000000ad9c49 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 0x00000000006957bd in operator() (this=0x7fa03421fe00)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #18 operator() (__closure=0x7fa03421fe00)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /tmp/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #21 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #22 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 7 (Thread 0x7f9feaffd700 (LWP 112215)):
 #0  0x00007fa039069ba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000ab949d 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  0x0000000000ac075a 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=0x7f9ffc7d7030)
     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=0x7f9ffc7d7030, 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  0x0000000000ac669d 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=0x7f9ffc7d7030, 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  0x0000000000ac6d06 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=0x7fa004001b40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x0000000000aca460 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fa004001b40)
     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=0x7fa004001b00, 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 0x0000000000abe8f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fa03426a000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x0000000000ad9c49 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 0x00000000006957bd in operator() (this=0x7fa03421fe40)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #18 operator() (__closure=0x7fa03421fe40)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /tmp/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #21 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #22 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 6 (Thread 0x7f9fea7fc700 (LWP 112216)):
 #0  0x00007fa039069ba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000ab949d 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  0x0000000000ac075a 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=0x7f9ffc7d70a8)
     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=0x7f9ffc7d70a8, 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  0x0000000000ac669d 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=0x7f9ffc7d70a8, 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  0x0000000000ac6d06 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=0x7fa004001b40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x0000000000aca460 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fa004001b40)
     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=0x7fa004001b00, 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 0x0000000000abe8f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fa03426a000, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x0000000000ad9c49 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 0x00000000006957bd in operator() (this=0x7fa03421fec0)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #18 operator() (__closure=0x7fa03421fec0)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /tmp/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #21 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #22 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 5 (Thread 0x7f9fe9ffb700 (LWP 112217)):
 #0  0x00007fa039069ba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000ab949d 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  0x0000000000ac075a 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=0x7f9ffc7d70f0)
     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=0x7f9ffc7d70f0, 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  0x0000000000ac669d 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=0x7f9ffc7d70f0, 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  0x0000000000ac6d06 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=0x7fa0040028c0, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #9  0x0000000000aca460 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fa0040028c0)
     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=0x7fa004002880, 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 0x0000000000abe8f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fa03426ac00, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #12 0x0000000000ad9c49 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 0x00000000006957bd in operator() (this=0x7fa03421ff80)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #18 operator() (__closure=0x7fa03421ff80)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /tmp/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #20 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #21 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #22 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 4 (Thread 0x7f9fe97fa700 (LWP 112218)):
 #0  0x00007fa039069ba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000ab949d 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  0x0000000000ac075a 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=0x7f9ffc7d7288)
     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=0x7f9ffc7d7288, 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  0x0000000000ac67d7 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=0x7f9ffc7d7288, 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  0x0000000000ac6d06 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=0x7fa004002e40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x0000000000aca460 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fa004002e40)
     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=0x7fa004002e00, 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 0x0000000000abe8f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fa03426b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x0000000000ad9c49 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 0x00000000006957bd in operator() (this=0x7fa034241080)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #19 operator() (__closure=0x7fa034241080)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /tmp/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #22 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #23 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 3 (Thread 0x7f9fe8ff9700 (LWP 112219)):
 #0  0x00007fa039069ba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000ab949d 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  0x0000000000ac075a 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=0x7f9ffc7d71f8)
     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=0x7f9ffc7d71f8, 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  0x0000000000ac67d7 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=0x7f9ffc7d71f8, 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  0x0000000000ac6d06 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=0x7fa004002e40, 
     deadline=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
 #10 0x0000000000aca460 in try_wait_for<long, std::ratio<1, 1000> > (
     timeout=<synthetic pointer>, this=0x7fa004002e40)
     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=0x7fa004002e00, 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 0x0000000000abe8f7 in folly::CPUThreadPoolExecutor::threadRun (
     this=0x7fa03426b800, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
 #13 0x0000000000ad9c49 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 0x00000000006957bd in operator() (this=0x7fa0342410c0)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #19 operator() (__closure=0x7fa0342410c0)
     at /tmp/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
 #20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
     at /tmp/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
 #21 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #22 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #23 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 2 (Thread 0x7f9fc79ff700 (LWP 112221)):
 #0  0x00007fa03906fe63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fa03ac2e3c5 in epoll_dispatch (base=0x7fa03416a000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fa03ac25376 in event_base_loop (base=0x7fa03416a000, flags=1)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x0000000000adf007 in folly::EventBase::loopBody (
     this=this@entry=0x7fa0343d1c80, 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  0x0000000000adf4d6 in folly::EventBase::loop (
     this=this@entry=0x7fa0343d1c80)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
 #5  0x0000000000ae0e96 in folly::EventBase::loopForever (this=0x7fa0343d1c80)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
 #6  0x0000000000ace4b9 in folly::IOThreadPoolExecutor::threadRun (
     this=0x7fa034215c80, thread=...)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/IOThreadPoolExecutor.cpp:195
 #7  0x0000000000ad9c49 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 0x00007fa039b42d40 in execute_native_thread_routine ()
     at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
 #13 0x00007fa039346e65 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007fa03906f88d in clone () from /lib64/libc.so.6
 
 Thread 1 (Thread 0x7fa03c5dce40 (LWP 112189)):
 #0  0x00007fa03906fe63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fa03ac2e3c5 in epoll_dispatch (base=0x7fa037ae9000, 
     tv=<optimized out>)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
 #2  0x00007fa03ac25376 in event_base_loop (base=0x7fa037ae9000, flags=0)
     at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
 #3  0x00000000005365f6 in memcached_main(int, char**) ()
     at /tmp/workspace/couchbase-server-unix/kv_engine/daemon/memcached.cc:1525
 #4  0x00007fa038f93505 in __libc_start_main () from /lib64/libc.so.6
 #5  0x000000000052c8cb in _start ()
     at /tmp/workspace/couchbase-server-unix/platform/include/platform/compression/allocator.h:75
 Detaching from program: /opt/couchbase/bin/memcached, process 112189