172.23.121.251: 1 core dump seen
running: //opt/couchbase/bin/minidump-2-core /opt/couchbase/var/lib/couchbase/crash/18c0403e-6b87-4424-571d1c84-0b1deb43.dmp > /opt/couchbase/var/lib/couchbase/crash/18c0403e-6b87-4424-571d1c84-0b1deb43.core
running: gdb --batch /opt/couchbase/bin/memcached -c /opt/couchbase/var/lib/couchbase/crash/18c0403e-6b87-4424-571d1c84-0b1deb43.core -ex "bt full" -ex quit
172.23.121.251: Stack Trace of first crash - 18c0403e-6b87-4424-571d1c84-0b1deb43.dmp
Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'.
 #0  0x00007f8540dae337 in raise () from /lib64/libc.so.6
 #0  0x00007f8540dae337 in raise () from /lib64/libc.so.6
 No symbol table info available.
 #1  0x00007f8540dafa28 in abort () from /lib64/libc.so.6
 No symbol table info available.
 #2  0x00007f85416f963c in __gnu_cxx::__verbose_terminate_handler() [clone .cold] () from /opt/couchbase/bin/../lib/libstdc++.so.6
 No symbol table info available.
 #3  0x0000000000b31dcb in backtrace_terminate_handler() ()
 No symbol table info available.
 #4  0x00007f85417048f6 in __cxxabiv1::__terminate(void (*)()) () from /opt/couchbase/bin/../lib/libstdc++.so.6
 No symbol table info available.
 #5  0x00007f8541704961 in std::terminate() () from /opt/couchbase/bin/../lib/libstdc++.so.6
 No symbol table info available.
 #6  0x00007f8541704bf4 in __cxa_throw () from /opt/couchbase/bin/../lib/libstdc++.so.6
 No symbol table info available.
 #7  0x00000000004c8ad0 in DurabilityMonitor::ActiveSyncWrite::ack(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) [clone .cold] ()
 No symbol table info available.
 #8  0x00000000007f26c0 in ActiveDurabilityMonitor::State::advanceAndAckForPosition(DurabilityMonitor::Position<std::__cxx11::list<DurabilityMonitor::ActiveSyncWrite, std::allocator<DurabilityMonitor::ActiveSyncWrite> > >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) ()
 No symbol table info available.
 #9  0x00000000007f533a in ActiveDurabilityMonitor::State::advanceNodePosition(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) ()
 No symbol table info available.
 #10 0x00000000007f5404 in ActiveDurabilityMonitor::State::updateHighPreparedSeqno(ActiveDurabilityMonitor::ResolvedQueue&) ()
 No symbol table info available.
 #11 0x00000000007f5850 in ActiveDurabilityMonitor::notifyLocalPersistence(folly::SharedMutexImpl<false, void, std::atomic, false, false>::ReadHolder&) ()
 No symbol table info available.
 #12 0x0000000000724f4c in VBucket::notifyPersistenceToDurabilityMonitor() ()
 No symbol table info available.
 #13 0x0000000000818d0f in EPBucket::flushVBucket_UNLOCKED(LockedVBucketPtr) ()
 No symbol table info available.
 #14 0x000000000081936f in EPBucket::flushVBucket(Vbid) ()
 No symbol table info available.
 #15 0x00000000006dbeb6 in Flusher::flushVB() ()
 No symbol table info available.
 #16 0x00000000006dc870 in Flusher::step(GlobalTask*) ()
 No symbol table info available.
 #17 0x0000000000aa0859 in GlobalTask::execute(std::basic_string_view<char, std::char_traits<char> >) ()
 No symbol table info available.
 #18 0x0000000000a99f1a in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const ()
 No symbol table info available.
 #19 0x0000000000aa1bfe in CancellableCPUExecutor::add(GlobalTask*, folly::Function<void ()>)::{lambda()#1}::operator()() const ()
 No symbol table info available.
 #20 0x0000000000bfef10 in folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) ()
 No symbol table info available.
 #21 0x0000000000be99aa in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 No symbol table info available.
 #22 0x0000000000c01ec9 in void 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&) ()
 No symbol table info available.
 #23 0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 No symbol table info available.
 #24 0x00007f854172dd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
 No symbol table info available.
 #25 0x00007f8543535e65 in start_thread () from /lib64/libpthread.so.0
 No symbol table info available.
 #26 0x00007f8540e7688d in clone () from /lib64/libc.so.6
 No symbol table info available.

##############################
running: 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/librt.so.1...(no debugging symbols found)...done.
 Loaded symbols for /lib64/librt.so.1
 Reading symbols from /opt/couchbase/bin/../lib/liblz4.so.1...Reading symbols from /opt/couchbase/bin/../lib/liblz4.so.1...(no debugging symbols found)...done.
 (no debugging symbols found)...done.
 Loaded symbols for /opt/couchbase/bin/../lib/liblz4.so.1
 Reading symbols from /opt/couchbase/bin/../lib/libsnappy.so.1...Reading symbols from /opt/couchbase/bin/../lib/libsnappy.so.1...(no debugging symbols found)...done.
 (no debugging symbols found)...done.
 Loaded symbols for /opt/couchbase/bin/../lib/libsnappy.so.1
 Reading symbols from /opt/couchbase/bin/../lib/libjemalloc.so.2...Reading symbols from /opt/couchbase/bin/../lib/libjemalloc.so.2...(no debugging symbols found)...done.
 (no debugging symbols found)...done.
 Loaded symbols for /opt/couchbase/bin/../lib/libjemalloc.so.2
 Reading symbols from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7...Reading symbols from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7...(no debugging symbols found)...done.
 (no debugging symbols found)...done.
 Loaded symbols for /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 Reading symbols from /opt/couchbase/bin/../lib/libevent_extra-2.1.so.7...Reading symbols from /opt/couchbase/bin/../lib/libevent_extra-2.1.so.7...(no debugging symbols found)...done.
 (no debugging symbols found)...done.
 Loaded symbols for /opt/couchbase/bin/../lib/libevent_extra-2.1.so.7
 Reading symbols from /opt/couchbase/bin/../lib/libevent_pthreads-2.1.so.7...Reading symbols from /opt/couchbase/bin/../lib/libevent_pthreads-2.1.so.7...(no debugging symbols found)...done.
 (no debugging symbols found)...done.
 Loaded symbols for /opt/couchbase/bin/../lib/libevent_pthreads-2.1.so.7
 Reading symbols from /opt/couchbase/bin/../lib/libevent_openssl-2.1.so.7...Reading symbols from /opt/couchbase/bin/../lib/libevent_openssl-2.1.so.7...(no debugging symbols found)...done.
 (no debugging symbols found)...done.
 Loaded symbols for /opt/couchbase/bin/../lib/libevent_openssl-2.1.so.7
 Reading symbols from /opt/couchbase/bin/../lib/libssl.so.1.1...Reading symbols from /opt/couchbase/bin/../lib/libssl.so.1.1...(no debugging symbols found)...done.
 (no debugging symbols found)...done.
 Loaded symbols for /opt/couchbase/bin/../lib/libssl.so.1.1
 Reading symbols from /opt/couchbase/bin/../lib/libcrypto.so.1.1...Reading symbols from /opt/couchbase/bin/../lib/libcrypto.so.1.1...(no debugging symbols found)...done.
 (no debugging symbols found)...done.
 Loaded symbols for /opt/couchbase/bin/../lib/libcrypto.so.1.1
 Reading symbols from /opt/couchbase/bin/../lib/libstdc++.so.6...Reading symbols from /opt/couchbase/bin/../lib/libstdc++.so.6...(no debugging symbols found)...done.
 (no debugging symbols found)...done.
 Loaded symbols for /opt/couchbase/bin/../lib/libstdc++.so.6
 Reading symbols from /lib64/libm.so.6...(no debugging symbols found)...done.
 Loaded symbols for /lib64/libm.so.6
 Reading symbols from /opt/couchbase/bin/../lib/libgcc_s.so.1...Reading symbols from /opt/couchbase/bin/../lib/libgcc_s.so.1...(no debugging symbols found)...done.
 (no debugging symbols found)...done.
 Loaded symbols for /opt/couchbase/bin/../lib/libgcc_s.so.1
 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
 0x00007fe011e55e63 in epoll_wait () from /lib64/libc.so.6
 
 Thread 30 (Thread 0x7fe0113ff700 (LWP 29426)):
 #0  0x00007fe014518da2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe013a225a7 in background_thread_entry ()
    from /opt/couchbase/bin/../lib/libjemalloc.so.2
 #2  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #3  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 29 (Thread 0x7fe0105fe700 (LWP 29427)):
 #0  0x00007fe014518da2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x0000000000b54bea in spdlog::details::thread_pool::process_next_msg_() ()
 #2  0x0000000000b54f38 in _ZNSt6thread11_State_implINS_8_InvokerISt5tupleIJZN6spdlog7details11thread_poolC4EmmSt8functionIFvvEEEUlvE_EEEEE6_M_runEv ()
 #3  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #4  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 28 (Thread 0x7fe00fdfd700 (LWP 29428)):
 #0  0x00007fe014518da2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x0000000000b549aa in _ZNSt6thread11_State_implINS_8_InvokerISt5tupleIJZN6spdlog7details15periodic_workerC4ERKSt8functionIFvvEENSt6chrono8durationIlSt5ratioILl1ELl1EEEEEUlvE_EEEEE6_M_runEv ()
 #2  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #3  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #4  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 27 (Thread 0x7fe00f5fc700 (LWP 29429)):
 #0  0x00007fe011e4abed in poll () from /lib64/libc.so.6
 #1  0x00000000005ab931 in check_stdin_thread(void*) ()
 #2  0x0000000000b8d7e9 in platform_thread_wrap(void*) ()
 #3  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #4  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 26 (Thread 0x7fe00d5f8700 (LWP 29433)):
 #0  0x00007fe014518da2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00000000005f2a46 in ExternalAuthManagerThread::run() ()
 #2  0x0000000000ba54e3 in Couchbase::Thread::thread_entry() ()
 #3  0x0000000000b8d7e9 in platform_thread_wrap(void*) ()
 #4  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #5  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 25 (Thread 0x7fe00c9f7700 (LWP 29434)):
 #0  0x00007fe014518da2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x000000000067af17 in AuditImpl::consume_events() ()
 #2  0x0000000000b8d7e9 in platform_thread_wrap(void*) ()
 #3  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #4  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 24 (Thread 0x7fe00ddf9700 (LWP 29435)):
 #0  0x00007fe0145189f5 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x0000000000ad3c0b in worker_thread ()
 #2  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #3  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 23 (Thread 0x7fe00e5fa700 (LWP 29436)):
 #0  0x00007fe0145189f5 in pthread_cond_wait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x0000000000ad3c0b in worker_thread ()
 #2  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #3  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 22 (Thread 0x7fe00edfb700 (LWP 29437)):
 #0  0x00007fe011e4abed in poll () from /lib64/libc.so.6
 #1  0x0000000000acab78 in master_thread ()
 #2  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #3  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 21 (Thread 0x7fe007fff700 (LWP 29438)):
 #0  0x00007fe011e55e63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe0137e93c5 in epoll_dispatch ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #2  0x00007fe0137e0376 in event_base_loop ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #3  0x0000000000c085f7 in folly::EventBase::loopBody(int, bool) ()
 #4  0x0000000000c08ac6 in folly::EventBase::loop() ()
 #5  0x0000000000c0a486 in folly::EventBase::loopForever() ()
 #6  0x00000000005b0b59 in worker_libevent(void*) ()
 #7  0x0000000000b8d7e9 in platform_thread_wrap(void*) ()
 #8  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #9  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 20 (Thread 0x7fe0077fe700 (LWP 29439)):
 #0  0x00007fe011e55e63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe0137e93c5 in epoll_dispatch ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #2  0x00007fe0137e0376 in event_base_loop ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #3  0x0000000000c085f7 in folly::EventBase::loopBody(int, bool) ()
 #4  0x0000000000c08ac6 in folly::EventBase::loop() ()
 #5  0x0000000000c0a486 in folly::EventBase::loopForever() ()
 #6  0x00000000005b0b59 in worker_libevent(void*) ()
 #7  0x0000000000b8d7e9 in platform_thread_wrap(void*) ()
 #8  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #9  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 19 (Thread 0x7fe006ffd700 (LWP 29440)):
 #0  0x00007fe011e55e63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe0137e93c5 in epoll_dispatch ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #2  0x00007fe0137e0376 in event_base_loop ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #3  0x0000000000c085f7 in folly::EventBase::loopBody(int, bool) ()
 #4  0x0000000000c08ac6 in folly::EventBase::loop() ()
 #5  0x0000000000c0a486 in folly::EventBase::loopForever() ()
 #6  0x00000000005b0b59 in worker_libevent(void*) ()
 #7  0x0000000000b8d7e9 in platform_thread_wrap(void*) ()
 #8  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #9  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 18 (Thread 0x7fe0067fc700 (LWP 29441)):
 #0  0x00007fe011e55e63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe0137e93c5 in epoll_dispatch ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #2  0x00007fe0137e0376 in event_base_loop ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #3  0x0000000000c085f7 in folly::EventBase::loopBody(int, bool) ()
 #4  0x0000000000c08ac6 in folly::EventBase::loop() ()
 #5  0x0000000000c0a486 in folly::EventBase::loopForever() ()
 #6  0x00000000005b0b59 in worker_libevent(void*) ()
 #7  0x0000000000b8d7e9 in platform_thread_wrap(void*) ()
 #8  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #9  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 17 (Thread 0x7fdffffff700 (LWP 29442)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef5bd in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 16 (Thread 0x7fdfff7fe700 (LWP 29443)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef5bd in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 15 (Thread 0x7fdffeffd700 (LWP 29444)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef6f7 in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 14 (Thread 0x7fdffcfd7700 (LWP 29445)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef5bd in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 13 (Thread 0x7fdff7fff700 (LWP 29446)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef6f7 in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 12 (Thread 0x7fdff77fe700 (LWP 29447)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef6f7 in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 11 (Thread 0x7fdff6ffd700 (LWP 29448)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef6f7 in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 10 (Thread 0x7fdff67fc700 (LWP 29449)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef6f7 in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 9 (Thread 0x7fdff5ffb700 (LWP 29450)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef5bd in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 8 (Thread 0x7fdff57fa700 (LWP 29451)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef5bd in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 7 (Thread 0x7fdff4ff9700 (LWP 29452)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef6f7 in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 6 (Thread 0x7fdfcffff700 (LWP 29453)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef6f7 in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 5 (Thread 0x7fdfcf7fe700 (LWP 29454)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef6f7 in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 4 (Thread 0x7fdfceffd700 (LWP 29455)):
 #0  0x00007fe011e4fba9 in syscall () from /lib64/libc.so.6
 #1  0x0000000000be16cd in folly::detail::futexWaitImpl(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const*, unsigned int) ()
 #2  0x0000000000beaf8a in folly::detail::FutexResult folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::atomic<unsigned int> const*, unsigned int, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, unsigned int) ()
 #3  0x0000000000bef6f7 in bool folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&, folly::WaitOptions const&) ()
 #4  0x0000000000befc26 in bool 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> > >(std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) ()
 #5  0x0000000000bf26e0 in folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for(std::chrono::duration<long, std::ratio<1l, 1000l> >) ()
 #6  0x0000000000be9937 in folly::CPUThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x0000000000a99c14 in void folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) ()
 #9  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #10 0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #11 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 3 (Thread 0x7fdfce7fc700 (LWP 29456)):
 #0  0x00007fe011e55e63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe0137e93c5 in epoll_dispatch ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #2  0x00007fe0137e0376 in event_base_loop ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #3  0x0000000000c085f7 in folly::EventBase::loopBody(int, bool) ()
 #4  0x0000000000c08ac6 in folly::EventBase::loop() ()
 #5  0x0000000000c0a486 in folly::EventBase::loopForever() ()
 #6  0x0000000000bf6739 in folly::IOThreadPoolExecutor::threadRun(std::shared_ptr<folly::ThreadPoolExecutor::Thread>) ()
 #7  0x0000000000c01ec9 in void 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&) ()
 #8  0x00007fe01270cd40 in execute_native_thread_routine ()
    from /opt/couchbase/bin/../lib/libstdc++.so.6
 #9  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #10 0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 2 (Thread 0x7fdfcdffb700 (LWP 29458)):
 #0  0x00007fe014518da2 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
    from /lib64/libpthread.so.0
 #1  0x00007fe013a21e51 in background_thread_entry ()
    from /opt/couchbase/bin/../lib/libjemalloc.so.2
 #2  0x00007fe014514e65 in start_thread () from /lib64/libpthread.so.0
 #3  0x00007fe011e5588d in clone () from /lib64/libc.so.6
 
 Thread 1 (Thread 0x7fe01564dc40 (LWP 29425)):
 #0  0x00007fe011e55e63 in epoll_wait () from /lib64/libc.so.6
 #1  0x00007fe0137e93c5 in epoll_dispatch ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #2  0x00007fe0137e0376 in event_base_loop ()
    from /opt/couchbase/bin/../lib/libevent_core-2.1.so.7
 #3  0x0000000000c085f7 in folly::EventBase::loopBody(int, bool) ()
 #4  0x0000000000c08ac6 in folly::EventBase::loop() ()
 #5  0x0000000000c0a486 in folly::EventBase::loopForever() ()
 #6  0x00000000005693f3 in memcached_main(int, char**) ()
 #7  0x00007fe011d79505 in __libc_start_main () from /lib64/libc.so.6
 #8  0x00000000005616f7 in _start ()
 Detaching from program: /opt/couchbase/bin/memcached, process 29425

2022-05-17 00:30:38,026 | test  | INFO    | MainThread | [basetestcase:check_logs:800] Comparing timestamps: Log's latest timestamp: 2022-05-17 00:30:06, Test's start timestamp is 2022-05-17 00:28:37.327000
2022-05-17 00:30:38,028 | test  | INFO    | MainThread | [basetestcase:check_logs:800] Comparing timestamps: Log's latest timestamp: 2022-05-17 00:30:06, Test's start timestamp is 2022-05-17 00:28:37.327000
2022-05-17 00:30:38,028 | test  | INFO    | MainThread | [basetestcase:check_coredump_exist:909] unwanted messages in /opt/couchbase/var/lib/couchbase/logs/babysitter.log
2022-05-17 00:30:38,028 | test  | CRITICAL | MainThread | [basetestcase:check_coredump_exist:911] 172.23.121.251: Found ' CRITICAL ' logs - ['[ns_server:info,2022-05-17T00:30:06.310-07:00,babysitter_of_ns_1@cb.local:<0.134.0>:ns_port_server:log:226]memcached<0.134.0>: 2022-05-17T00:30:06.118646-07:00 CRITICAL *** Fatal error encountered during exception handling ***\n', 'memcached<0.134.0>: 2022-05-17T00:30:06.125901-07:00 CRITICAL Caught unhandled std::exception-derived exception. what(): SyncWrite::ack: Acking without a ReplicationChain\n', 'memcached<0.134.0>: CRITICAL Breakpad caught a crash (Couchbase version 7.1.1-3056). Writing crash dump to /opt/couchbase/var/lib/couchbase/crash/18c0403e-6b87-4424-571d1c84-0b1deb43.dmp before terminating.\n', '[ns_server:info,2022-05-17T00:30:06.551-07:00,babysitter_of_ns_1@cb.local:<0.315.0>:ns_port_server:log:226]memcached<0.315.0>: 2022-05-17T00:30:06.350853-07:00 CRITICAL Detected previous crash\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350901-07:00 CRITICAL Breakpad caught a crash (Couchbase version 7.1.1-3056). Writing crash dump to /opt/couchbase/var/lib/couchbase/crash/18c0403e-6b87-4424-571d1c84-0b1deb43.dmp before terminating.\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350904-07:00 CRITICAL Stack backtrace of crashed thread:\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350905-07:00 CRITICAL    #0  /opt/couchbase/bin/memcached() [0x400000+0x7278f8]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350917-07:00 CRITICAL    #1  /opt/couchbase/bin/memcached(_ZN15google_breakpad16ExceptionHandler12GenerateDumpEPNS0_12CrashContextE+0x3ea) [0x400000+0x7790ca]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350919-07:00 CRITICAL    #2  /opt/couchbase/bin/memcached(_ZN15google_breakpad16ExceptionHandler13SignalHandlerEiP9siginfo_tPv+0xb8) [0x400000+0x779408]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350921-07:00 CRITICAL    #3  /lib64/libpthread.so.0() [0x7f854352e000+0xf5f0]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350959-07:00 CRITICAL    #4  /lib64/libc.so.6(gsignal+0x37) [0x7f8540d78000+0x36337]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350961-07:00 CRITICAL    #5  /lib64/libc.so.6(abort+0x148) [0x7f8540d78000+0x37a28]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350962-07:00 CRITICAL    #6  /opt/couchbase/bin/../lib/libstdc++.so.6() [0x7f8541660000+0x9963c]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350963-07:00 CRITICAL    #7  /opt/couchbase/bin/memcached() [0x400000+0x731dcb]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350964-07:00 CRITICAL    #8  /opt/couchbase/bin/../lib/libstdc++.so.6() [0x7f8541660000+0xa48f6]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350965-07:00 CRITICAL    #9  /opt/couchbase/bin/../lib/libstdc++.so.6() [0x7f8541660000+0xa4961]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350967-07:00 CRITICAL    #10 /opt/couchbase/bin/../lib/libstdc++.so.6() [0x7f8541660000+0xa4bf4]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350968-07:00 CRITICAL    #11 /opt/couchbase/bin/memcached() [0x400000+0xc8ad0]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350969-07:00 CRITICAL    #12 /opt/couchbase/bin/memcached() [0x400000+0x3f26c0]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350970-07:00 CRITICAL    #13 /opt/couchbase/bin/memcached() [0x400000+0x3f533a]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350995-07:00 CRITICAL    #14 /opt/couchbase/bin/memcached() [0x400000+0x3f5404]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350998-07:00 CRITICAL    #15 /opt/couchbase/bin/memcached() [0x400000+0x3f5850]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.350999-07:00 CRITICAL    #16 /opt/couchbase/bin/memcached() [0x400000+0x324f4c]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351021-07:00 CRITICAL    #17 /opt/couchbase/bin/memcached() [0x400000+0x418d0f]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351023-07:00 CRITICAL    #18 /opt/couchbase/bin/memcached() [0x400000+0x41936f]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351024-07:00 CRITICAL    #19 /opt/couchbase/bin/memcached() [0x400000+0x2dbeb6]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351025-07:00 CRITICAL    #20 /opt/couchbase/bin/memcached() [0x400000+0x2dc870]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351026-07:00 CRITICAL    #21 /opt/couchbase/bin/memcached() [0x400000+0x6a0859]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351030-07:00 CRITICAL    #22 /opt/couchbase/bin/memcached() [0x400000+0x699f1a]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351032-07:00 CRITICAL    #23 /opt/couchbase/bin/memcached() [0x400000+0x6a1bfe]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351034-07:00 CRITICAL    #24 /opt/couchbase/bin/memcached() [0x400000+0x7fef10]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351035-07:00 CRITICAL    #25 /opt/couchbase/bin/memcached() [0x400000+0x7e99aa]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351036-07:00 CRITICAL    #26 /opt/couchbase/bin/memcached() [0x400000+0x801ec9]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351038-07:00 CRITICAL    #27 /opt/couchbase/bin/memcached() [0x400000+0x699c14]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351061-07:00 CRITICAL    #28 /opt/couchbase/bin/../lib/libstdc++.so.6() [0x7f8541660000+0xcdd40]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351086-07:00 CRITICAL    #29 /lib64/libpthread.so.0() [0x7f854352e000+0x7e65]\n', 'memcached<0.315.0>: 2022-05-17T00:30:06.351090-07:00 CRITICAL    #30 /lib64/libc.so.6(clone+0x6d) [0x7f8540d78000+0xfe88d]\n']