(gdb) thread apply all bt

Thread 50 (LWP 9415):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423ad51fa0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41d07f8700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 49 (LWP 9414):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423ad51f70) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41d0ff9700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 48 (LWP 9413):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423ad51f40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41d17fa700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 47 (LWP 9412):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423ad51f10) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41d1ffb700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 46 (LWP 9411):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423ad51ee0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41d27fc700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 45 (LWP 9410):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423ad51eb0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41d2ffd700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 44 (LWP 9409):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
---Type <return> to continue, or q <return> to quit---
#4  0x0000000000b92ec9 in run (this=0x7f423eb41140) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41d37fe700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 43 (LWP 9408):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423eb41110) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41d3fff700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 42 (LWP 9407):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423eb410e0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41d8cfc700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 41 (LWP 9406):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423eb410b0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41d94fd700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 40 (LWP 9405):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423eb41080) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41d9cfe700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 39 (LWP 9404):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423eb41050) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41da4ff700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 38 (LWP 9401):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423eb40f30) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41dc7f8700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 37 (LWP 9400):
---Type <return> to continue, or q <return> to quit---
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423eb40f00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41dcff9700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 36 (LWP 9399):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423eb40ed0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41dd7fa700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 35 (LWP 9398):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f424075a8bc in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#2  0x00000000009b9468 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:101
#3  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#4  0x0000000000b92ec9 in run (this=0x7f423eb40ea0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#5  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#6  0x00007f4242567ea5 in start_thread (arg=0x7f41ddffb700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 34 (LWP 9397):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00000000009b96ff in __gthread_cond_timedwait (__abs_timeout=0x7f41de7ea960, __mutex=<optimized out>, __cond=0x7f423eb5faf8) 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=0x7f423eb5faf8) 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=0x7f423eb5faf8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:141
#4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=..., __rtime=..., __lock=..., this=0x7f423eb5faf8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:172
#5  magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:99
#6  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#7  0x0000000000b92ec9 in run (this=0x7f423eb40e70) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f4242567ea5 in start_thread (arg=0x7f41de7fc700) at pthread_create.c:307
#10 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 33 (LWP 9396):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00000000009b96ff in __gthread_cond_timedwait (__abs_timeout=0x7f41defeb960, __mutex=<optimized out>, __cond=0x7f423eb5faf8) 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=0x7f423eb5faf8) 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=0x7f423eb5faf8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:141
#4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=..., __rtime=..., __lock=..., this=0x7f423eb5faf8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:172
#5  magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:99
#6  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#7  0x0000000000b92ec9 in run (this=0x7f423eb40e40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f4242567ea5 in start_thread (arg=0x7f41deffd700) at pthread_create.c:307
#10 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 32 (LWP 9395):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00000000009b96ff in __gthread_cond_timedwait (__abs_timeout=0x7f41df7ec960, __mutex=<optimized out>, __cond=0x7f423eb5faf8) 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=0x7f423eb5faf8) 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=0x7f423eb5faf8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:141
#4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=..., __rtime=..., __lock=..., this=0x7f423eb5faf8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:172
#5  magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:99
#6  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#7  0x0000000000b92ec9 in run (this=0x7f423eb40e10) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f4242567ea5 in start_thread (arg=0x7f41df7fe700) at pthread_create.c:307
---Type <return> to continue, or q <return> to quit---
#10 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 31 (LWP 9394):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00000000009b96ff in __gthread_cond_timedwait (__abs_timeout=0x7f41dffed960, __mutex=<optimized out>, __cond=0x7f423eb5faf8) 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=0x7f423eb5faf8) 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=0x7f423eb5faf8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:141
#4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=..., __rtime=..., __lock=..., this=0x7f423eb5faf8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:172
#5  magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:99
#6  0x00000000009b9851 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:160
#7  0x0000000000b92ec9 in run (this=0x7f423eb40de0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f4242567ea5 in start_thread (arg=0x7f41dffff700) at pthread_create.c:307
#10 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 30 (LWP 9393):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f4241a74e51 in background_thread_sleep (tsdn=<optimized out>, interval=10000000000, info=<optimized out>) at src/background_thread.c:255
#2  background_work_sleep_once (ind=<optimized out>, info=<optimized out>, tsdn=<optimized out>) at src/background_thread.c:307
#3  background_work (ind=<optimized out>, tsd=0x7f4204fe8220) at src/background_thread.c:497
#4  background_thread_entry (ind_arg=<optimized out>) at src/background_thread.c:522
#5  0x00007f4242567ea5 in start_thread (arg=0x7f4204ff9700) at pthread_create.c:307
#6  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 29 (LWP 9392):
#0  0x00007f423fea8fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f424183c3c5 in epoll_dispatch (base=0x7f423ea69500, tv=<optimized out>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
#2  0x00007f4241833376 in event_base_loop (base=0x7f423ea69500, flags=1) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
#3  0x0000000000c052b7 in folly::EventBase::loopBody (this=this@entry=0x7f423ea7bf00, 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  0x0000000000c05786 in folly::EventBase::loop (this=this@entry=0x7f423ea7bf00) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#5  0x0000000000c07146 in folly::EventBase::loopForever (this=0x7f423ea7bf00) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#6  0x0000000000bf33f9 in folly::IOThreadPoolExecutor::threadRun (this=0x7f423ea7b780, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/IOThreadPoolExecutor.cpp:195
#7  0x0000000000bfeb89 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 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#13 0x00007f4242567ea5 in start_thread (arg=0x7f42057fa700) at pthread_create.c:307
#14 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 28 (LWP 9391):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000bde22d in nativeFutexWaitImpl (waitMask=waitMask@entry=100570648, absSteadyTime=absSteadyTime@entry=0x7f4205fe95f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f42267db168)
    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=futex@entry=0x7f42267db168, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f4205fe9618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000be7aea 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=0x7f42267db168) 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=0x7f42267db168, 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  0x0000000000bec3b7 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=0x7f42267db168, 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  0x0000000000bec8e6 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=0x1b84240, deadline=...)
---Type <return> to continue, or q <return> to quit---
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#10 0x0000000000bef3a0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1b84240)
    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=0x1b84200, 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 0x0000000000be6497 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eb25800, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#13 0x0000000000bfeb89 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 0x0000000000aa73b4 in operator() (this=0x7f423ead3c80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#19 operator() (__closure=0x7f423ead3c80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#21 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#22 0x00007f4242567ea5 in start_thread (arg=0x7f4205ffb700) at pthread_create.c:307
#23 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 27 (LWP 9390):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000bde22d in nativeFutexWaitImpl (waitMask=waitMask@entry=108963352, absSteadyTime=absSteadyTime@entry=0x7f42067ea5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f42267db150)
    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=futex@entry=0x7f42267db150, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f42067ea618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000be7aea 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=0x7f42267db150) 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=0x7f42267db150, 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  0x0000000000bec3b7 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=0x7f42267db150, 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  0x0000000000bec8e6 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=0x1b84240, deadline=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#10 0x0000000000bef3a0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1b84240)
    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=0x1b84200, 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 0x0000000000be6497 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eb25800, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#13 0x0000000000bfeb89 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 0x0000000000aa73b4 in operator() (this=0x7f423ead3c40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#19 operator() (__closure=0x7f423ead3c40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#21 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#22 0x00007f4242567ea5 in start_thread (arg=0x7f42067fc700) at pthread_create.c:307
#23 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

---Type <return> to continue, or q <return> to quit---
Thread 26 (LWP 9389):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000bde22d in nativeFutexWaitImpl (waitMask=waitMask@entry=117356056, absSteadyTime=absSteadyTime@entry=0x7f4206feb5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f42267db120)
    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=futex@entry=0x7f42267db120, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f4206feb618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000be7aea 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=0x7f42267db120) 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=0x7f42267db120, 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  0x0000000000bec27d 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=0x7f42267db120, 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  0x0000000000bec8e6 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=0x1b83540, deadline=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000bef3a0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1b83540)
    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=0x1b83500, 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 0x0000000000be6497 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eb24c00, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000bfeb89 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 0x0000000000aa73b4 in operator() (this=0x7f423ead3b80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#18 operator() (__closure=0x7f423ead3b80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#21 0x00007f4242567ea5 in start_thread (arg=0x7f4206ffd700) at pthread_create.c:307
#22 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 25 (LWP 9388):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000bde22d in nativeFutexWaitImpl (waitMask=waitMask@entry=125748760, absSteadyTime=absSteadyTime@entry=0x7f42077ec5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f42267db108)
    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=futex@entry=0x7f42267db108, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f42077ec618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000be7aea 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=0x7f42267db108) 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=0x7f42267db108, 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  0x0000000000bec27d 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=0x7f42267db108, 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  0x0000000000bec8e6 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=0x1b83540, deadline=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000bef3a0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1b83540)
    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=0x1b83500, 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 0x0000000000be6497 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eb24c00, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000bfeb89 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
---Type <return> to continue, or q <return> to quit---
#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 0x0000000000aa73b4 in operator() (this=0x7f423ead3280) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#18 operator() (__closure=0x7f423ead3280) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#21 0x00007f4242567ea5 in start_thread (arg=0x7f42077fe700) at pthread_create.c:307
#22 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 24 (LWP 9387):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000bde22d in nativeFutexWaitImpl (waitMask=waitMask@entry=134141464, absSteadyTime=absSteadyTime@entry=0x7f4207fed5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f42267db0f0)
    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=futex@entry=0x7f42267db0f0, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f4207fed618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000be7aea 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=0x7f42267db0f0) 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=0x7f42267db0f0, 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  0x0000000000bec27d 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=0x7f42267db0f0, 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  0x0000000000bec8e6 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=0x1b83540, deadline=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000bef3a0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1b83540)
    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=0x1b83500, 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 0x0000000000be6497 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eb24c00, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000bfeb89 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 0x0000000000aa73b4 in operator() (this=0x7f423eabff00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#18 operator() (__closure=0x7f423eabff00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#21 0x00007f4242567ea5 in start_thread (arg=0x7f4207fff700) at pthread_create.c:307
#22 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 23 (LWP 9386):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000bde22d in nativeFutexWaitImpl (waitMask=waitMask@entry=620516888, absSteadyTime=absSteadyTime@entry=0x7f4224fc55f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f42267db0d8)
    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=futex@entry=0x7f42267db0d8, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f4224fc5618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000be7aea 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=0x7f42267db0d8) 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=0x7f42267db0d8, 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  0x0000000000bec27d 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
---Type <return> to continue, or q <return> to quit---
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f42267db0d8, 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  0x0000000000bec8e6 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=0x1b83540, deadline=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000bef3a0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1b83540)
    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=0x1b83500, 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 0x0000000000be6497 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eb24c00, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000bfeb89 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 0x0000000000aa73b4 in operator() (this=0x7f423eabfec0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#18 operator() (__closure=0x7f423eabfec0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#21 0x00007f4242567ea5 in start_thread (arg=0x7f4224fd7700) at pthread_create.c:307
#22 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 22 (LWP 9385):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000bde22d in nativeFutexWaitImpl (waitMask=waitMask@entry=628909592, absSteadyTime=absSteadyTime@entry=0x7f42257c65f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f42267db0c0)
    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=futex@entry=0x7f42267db0c0, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f42257c6618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000be7aea 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=0x7f42267db0c0) 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=0x7f42267db0c0, 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  0x0000000000bec27d 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=0x7f42267db0c0, 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  0x0000000000bec8e6 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=0x1b82840, deadline=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000bef3a0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1b82840)
    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=0x1b82800, 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 0x0000000000be6497 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eb24000, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000bfeb89 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 0x0000000000aa73b4 in operator() (this=0x7f423eabfe00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#18 operator() (__closure=0x7f423eabfe00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#21 0x00007f4242567ea5 in start_thread (arg=0x7f42257d8700) at pthread_create.c:307
---Type <return> to continue, or q <return> to quit---
#22 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 21 (LWP 9384):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000bde22d in nativeFutexWaitImpl (waitMask=waitMask@entry=637302296, absSteadyTime=absSteadyTime@entry=0x7f4225fc75f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f42267db0a8)
    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=futex@entry=0x7f42267db0a8, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f4225fc7618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000be7aea 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=0x7f42267db0a8) 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=0x7f42267db0a8, 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  0x0000000000bec27d 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=0x7f42267db0a8, 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  0x0000000000bec8e6 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=0x1b82840, deadline=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000bef3a0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1b82840)
    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=0x1b82800, 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 0x0000000000be6497 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eb24000, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000bfeb89 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 0x0000000000aa73b4 in operator() (this=0x7f423eabfd40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#18 operator() (__closure=0x7f423eabfd40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#21 0x00007f4242567ea5 in start_thread (arg=0x7f4225fd9700) at pthread_create.c:307
#22 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 20 (LWP 9383):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000bde22d in nativeFutexWaitImpl (waitMask=waitMask@entry=645695000, absSteadyTime=absSteadyTime@entry=0x7f42267c85f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f42267db090)
    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=futex@entry=0x7f42267db090, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f42267c8618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000be7aea 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=0x7f42267db090) 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=0x7f42267db090, 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  0x0000000000bec27d 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=0x7f42267db090, 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  0x0000000000bec8e6 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=0x1b82840, deadline=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000bef3a0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1b82840)
    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=0x1b82800, 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 0x0000000000be6497 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eb24000, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
---Type <return> to continue, or q <return> to quit---
#12 0x0000000000bfeb89 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 0x0000000000aa73b4 in operator() (this=0x7f423eabfd00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#18 operator() (__closure=0x7f423eabfd00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#21 0x00007f4242567ea5 in start_thread (arg=0x7f42267da700) at pthread_create.c:307
#22 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 19 (LWP 9382):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000bde22d in nativeFutexWaitImpl (waitMask=waitMask@entry=815699480, absSteadyTime=absSteadyTime@entry=0x7f42309e95f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f42267db078)
    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=futex@entry=0x7f42267db078, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f42309e9618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000be7aea 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=0x7f42267db078) 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=0x7f42267db078, 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  0x0000000000bec27d 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=0x7f42267db078, 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  0x0000000000bec8e6 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=0x1b82840, deadline=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000bef3a0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1b82840)
    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=0x1b82800, 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 0x0000000000be6497 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eb24000, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000bfeb89 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 0x0000000000aa73b4 in operator() (this=0x7f423eabfcc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#18 operator() (__closure=0x7f423eabfcc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#21 0x00007f4242567ea5 in start_thread (arg=0x7f42309fb700) at pthread_create.c:307
#22 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 18 (LWP 9381):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f4242569e9b in _L_lock_883 () from /lib64/libpthread.so.0
#2  0x00007f4242569d68 in __GI___pthread_mutex_lock (mutex=mutex@entry=0x112ff40 <google_breakpad::(anonymous namespace)::g_handler_stack_mutex_>) at ../nptl/pthread_mutex_lock.c:78
#3  0x0000000000b7ea7f in google_breakpad::ExceptionHandler::SignalHandler (sig=6, info=0x7f42311e9a30, uc=0x7f42311e9900) at src/client/linux/handler/exception_handler.cc:342
#4  <signal handler called>
#5  0x00007f423fde03d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:55
#6  0x00007f423fde1ac8 in __GI_abort () at abort.c:90
#7  0x00007f42407387f2 in __gnu_cxx::__verbose_terminate_handler() () from /opt/couchbase/bin/../lib/libstdc++.so.6
#8  0x0000000000b374ab in backtrace_terminate_handler() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:88
---Type <return> to continue, or q <return> to quit---
#9  0x00007f42407368f6 in __cxxabiv1::__terminate(void (*)()) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#10 0x00007f4240736961 in std::terminate() () from /opt/couchbase/bin/../lib/libstdc++.so.6
#11 0x00007f4240736bf4 in __cxa_throw () from /opt/couchbase/bin/../lib/libstdc++.so.6
#12 0x0000000000539ad4 in cb::throwWithTrace<std::underflow_error> (exception=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/exception/info.hpp:129
#13 0x0000000000832c08 in cb::ThrowExceptionUnderflowPolicy<unsigned long>::underflow () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/char_traits.h:322
#14 0x000000000083308f in store (desired=18446744073709551458, this=0x7f41cc996f60) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/atomic_base.h:116
#15 operator= (val=18446744073709551458, this=0x7f41cc996f60) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/non_negative_counter.h:360
#16 setNumTotalItems (totalItems=18446744073709551458, this=0x7f41cc996b00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_vb.cc:423
#17 EPVBucket::setNumTotalItems(KVStoreIface&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_vb.cc:1179
#18 0x00000000007442f1 in Warmup::estimateDatabaseItemCount (this=0x7f41cd853a00, shardId=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvshard.h:72
#19 0x000000000074e251 in WarmupEstimateDatabaseItemCount::run (this=0x7f41dbfe60f0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/warmup.cc:266
#20 0x0000000000aaa622 in GlobalTask::execute() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:68
#21 0x0000000000aa7725 in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f42311ea840) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:189
#22 0x0000000000bfbbd0 in operator() (this=0x7f42311ea840) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#23 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f423eafe400, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.1.0-2111.x86_64.debug, CU 0xa3160b8, DIE 0xa399fed>)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#24 0x0000000000be650a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eafe400, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#25 0x0000000000bfeb89 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#26 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#27 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#28 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#29 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#30 0x0000000000aa73b4 in operator() (this=0x7f423eabfbc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#31 operator() (__closure=0x7f423eabfbc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#32 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#33 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#34 0x00007f4242567ea5 in start_thread (arg=0x7f42311fc700) at pthread_create.c:307
#35 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 17 (LWP 9380):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f4242569e9b in _L_lock_883 () from /lib64/libpthread.so.0
#2  0x00007f4242569d68 in __GI___pthread_mutex_lock (mutex=mutex@entry=0x112ff40 <google_breakpad::(anonymous namespace)::g_handler_stack_mutex_>) at ../nptl/pthread_mutex_lock.c:78
#3  0x0000000000b7ea7f in google_breakpad::ExceptionHandler::SignalHandler (sig=6, info=0x7f42319eaa30, uc=0x7f42319ea900) at src/client/linux/handler/exception_handler.cc:342
#4  <signal handler called>
#5  0x00007f423fde03d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:55
#6  0x00007f423fde1ac8 in __GI_abort () at abort.c:90
#7  0x00007f42407387f2 in __gnu_cxx::__verbose_terminate_handler() () from /opt/couchbase/bin/../lib/libstdc++.so.6
#8  0x0000000000b374ab in backtrace_terminate_handler() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:88
#9  0x00007f42407368f6 in __cxxabiv1::__terminate(void (*)()) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#10 0x00007f4240736961 in std::terminate() () from /opt/couchbase/bin/../lib/libstdc++.so.6
#11 0x00007f4240736bf4 in __cxa_throw () from /opt/couchbase/bin/../lib/libstdc++.so.6
#12 0x0000000000539ad4 in cb::throwWithTrace<std::underflow_error> (exception=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/exception/info.hpp:129
#13 0x0000000000832c08 in cb::ThrowExceptionUnderflowPolicy<unsigned long>::underflow () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/char_traits.h:322
#14 0x000000000083308f in store (desired=18446744073709551612, this=0x7f41cc38fd60) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/atomic_base.h:116
#15 operator= (val=18446744073709551612, this=0x7f41cc38fd60) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/non_negative_counter.h:360
#16 setNumTotalItems (totalItems=18446744073709551612, this=0x7f41cc38f900) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_vb.cc:423
#17 EPVBucket::setNumTotalItems(KVStoreIface&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_vb.cc:1179
#18 0x00000000007442f1 in Warmup::estimateDatabaseItemCount (this=0x7f41cd853a00, shardId=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvshard.h:72
#19 0x000000000074e251 in WarmupEstimateDatabaseItemCount::run (this=0x7f41da81a370) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/warmup.cc:266
#20 0x0000000000aaa622 in GlobalTask::execute() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:68
#21 0x0000000000aa7725 in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f42319eb840) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:189
#22 0x0000000000bfbbd0 in operator() (this=0x7f42319eb840) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#23 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f423eafe400, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.1.0-2111.x86_64.debug, CU 0xa3160b8, DIE 0xa399fed>)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#24 0x0000000000be650a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eafe400, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#25 0x0000000000bfeb89 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
---Type <return> to continue, or q <return> to quit---
#26 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#27 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#28 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#29 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#30 0x0000000000aa73b4 in operator() (this=0x7f423eabfb40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#31 operator() (__closure=0x7f423eabfb40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#32 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#33 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#34 0x00007f4242567ea5 in start_thread (arg=0x7f42319fd700) at pthread_create.c:307
#35 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 16 (LWP 9379):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f4242569e9b in _L_lock_883 () from /lib64/libpthread.so.0
#2  0x00007f4242569d68 in __GI___pthread_mutex_lock (mutex=mutex@entry=0x112ff40 <google_breakpad::(anonymous namespace)::g_handler_stack_mutex_>) at ../nptl/pthread_mutex_lock.c:78
#3  0x0000000000b7ea7f in google_breakpad::ExceptionHandler::SignalHandler (sig=6, info=0x7f42321eba30, uc=0x7f42321eb900) at src/client/linux/handler/exception_handler.cc:342
#4  <signal handler called>
#5  0x00007f423fde03d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:55
#6  0x00007f423fde1ac8 in __GI_abort () at abort.c:90
#7  0x00007f42407387f2 in __gnu_cxx::__verbose_terminate_handler() () from /opt/couchbase/bin/../lib/libstdc++.so.6
#8  0x0000000000b374ab in backtrace_terminate_handler() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:88
#9  0x00007f42407368f6 in __cxxabiv1::__terminate(void (*)()) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#10 0x00007f4240736961 in std::terminate() () from /opt/couchbase/bin/../lib/libstdc++.so.6
#11 0x00007f4240736bf4 in __cxa_throw () from /opt/couchbase/bin/../lib/libstdc++.so.6
#12 0x0000000000539ad4 in cb::throwWithTrace<std::underflow_error> (exception=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/exception/info.hpp:129
#13 0x0000000000832c08 in cb::ThrowExceptionUnderflowPolicy<unsigned long>::underflow () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/char_traits.h:322
#14 0x000000000083308f in store (desired=18446744073709551460, this=0x7f41cc8deb60) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/atomic_base.h:116
#15 operator= (val=18446744073709551460, this=0x7f41cc8deb60) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/non_negative_counter.h:360
#16 setNumTotalItems (totalItems=18446744073709551460, this=0x7f41cc8de700) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_vb.cc:423
#17 EPVBucket::setNumTotalItems(KVStoreIface&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_vb.cc:1179
#18 0x00000000007442f1 in Warmup::estimateDatabaseItemCount (this=0x7f41cd853a00, shardId=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvshard.h:72
#19 0x000000000074e251 in WarmupEstimateDatabaseItemCount::run (this=0x7f41dbfe6a50) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/warmup.cc:266
#20 0x0000000000aaa622 in GlobalTask::execute() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:68
#21 0x0000000000aa7725 in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f42321ec840) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:189
#22 0x0000000000bfbbd0 in operator() (this=0x7f42321ec840) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#23 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f423eafe400, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.1.0-2111.x86_64.debug, CU 0xa3160b8, DIE 0xa399fed>)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#24 0x0000000000be650a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eafe400, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#25 0x0000000000bfeb89 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#26 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#27 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#28 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#29 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#30 0x0000000000aa73b4 in operator() (this=0x7f423eabfb00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#31 operator() (__closure=0x7f423eabfb00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#32 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#33 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#34 0x00007f4242567ea5 in start_thread (arg=0x7f42321fe700) at pthread_create.c:307
#35 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 15 (LWP 9377):
#0  0x00007f423fea8fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f424183c3c5 in epoll_dispatch (base=0x7f423ea69200, tv=<optimized out>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
#2  0x00007f4241833376 in event_base_loop (base=0x7f423ea69200, flags=1) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
#3  0x0000000000c052b7 in folly::EventBase::loopBody (this=this@entry=0x7f423eb01380, 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  0x0000000000c05786 in folly::EventBase::loop (this=this@entry=0x7f423eb01380) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
---Type <return> to continue, or q <return> to quit---


#5  0x0000000000c07146 in folly::EventBase::loopForever (this=this@entry=0x7f423eb01380) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#6  0x00000000005aefd9 in worker_libevent (arg=0x7f423eb01370) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:115
#7  0x0000000000b92ec9 in run (this=0x7f423ea290a0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f4242567ea5 in start_thread (arg=0x7f42389f3700) at pthread_create.c:307
#10 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 14 (LWP 9376):
#0  0x00007f423fea8fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f424183c3c5 in epoll_dispatch (base=0x7f423ea68f00, tv=<optimized out>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
#2  0x00007f4241833376 in event_base_loop (base=0x7f423ea68f00, flags=1) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
#3  0x0000000000c052b7 in folly::EventBase::loopBody (this=this@entry=0x7f423eb007b0, 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  0x0000000000c05786 in folly::EventBase::loop (this=this@entry=0x7f423eb007b0) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#5  0x0000000000c07146 in folly::EventBase::loopForever (this=this@entry=0x7f423eb007b0) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#6  0x00000000005aefd9 in worker_libevent (arg=0x7f423eb007a0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:115
#7  0x0000000000b92ec9 in run (this=0x7f423ea29070) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f4242567ea5 in start_thread (arg=0x7f42391f4700) at pthread_create.c:307
#10 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 13 (LWP 9375):
#0  0x00007f423fea8fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f424183c3c5 in epoll_dispatch (base=0x7f423ea68c00, tv=<optimized out>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
#2  0x00007f4241833376 in event_base_loop (base=0x7f423ea68c00, flags=1) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
#3  0x0000000000c052b7 in folly::EventBase::loopBody (this=this@entry=0x7f423eaffbe0, 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  0x0000000000c05786 in folly::EventBase::loop (this=this@entry=0x7f423eaffbe0) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#5  0x0000000000c07146 in folly::EventBase::loopForever (this=this@entry=0x7f423eaffbe0) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#6  0x00000000005aefd9 in worker_libevent (arg=0x7f423eaffbd0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:115
#7  0x0000000000b92ec9 in run (this=0x7f423ea28d70) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f4242567ea5 in start_thread (arg=0x7f42399f5700) at pthread_create.c:307
#10 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 12 (LWP 9374):
#0  0x00007f423fea8fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f424183c3c5 in epoll_dispatch (base=0x7f423ea68900, tv=<optimized out>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
#2  0x00007f4241833376 in event_base_loop (base=0x7f423ea68900, flags=1) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
#3  0x0000000000c052b7 in folly::EventBase::loopBody (this=this@entry=0x7f423eaff010, 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  0x0000000000c05786 in folly::EventBase::loop (this=this@entry=0x7f423eaff010) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#5  0x0000000000c07146 in folly::EventBase::loopForever (this=this@entry=0x7f423eaff010) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#6  0x00000000005aefd9 in worker_libevent (arg=0x7f423eaff000) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:115
#7  0x0000000000b92ec9 in run (this=0x7f423ea28ec0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f4242567ea5 in start_thread (arg=0x7f423a1f6700) at pthread_create.c:307
#10 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 11 (LWP 9373):
#0  0x00007f423fe9dccd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000000000ad0428 in master_thread_run (ctx=0x1b7e5b0) 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=0x1b7e5b0) 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  0x00007f4242567ea5 in start_thread (arg=0x7f423cdfb700) at pthread_create.c:307
#4  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 10 (LWP 9372):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000000000ad94bb in consume_socket (thread_index=<optimized out>, sp=0x1b7d748, ctx=0x1b7e5b0)
    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=0x1b7ce58) 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=0x1b7ce58) 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  0x00007f4242567ea5 in start_thread (arg=0x7f423c5fa700) at pthread_create.c:307
#5  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 9 (LWP 9371):
---Type <return> to continue, or q <return> to quit---
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000000000ad94bb in consume_socket (thread_index=<optimized out>, sp=0x1b7cd60, ctx=0x1b7e5b0)
    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=0x1b7c470) 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=0x1b7c470) 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  0x00007f4242567ea5 in start_thread (arg=0x7f423bdf9700) at pthread_create.c:307
#5  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 8 (LWP 9370):



#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x0000000000678a77 in __gthread_cond_timedwait (__abs_timeout=0x7f423a9e59b0, __mutex=<optimized out>, __cond=0x7f423ea9fcf8) 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=0x7f423ea9fcf8) 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=0x7f423ea9fcf8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:141
#4  wait_for<long, std::ratio<1> > (__rtime=..., __rtime=..., __lock=..., this=0x7f423ea9fcf8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:172
#5  AuditImpl::consume_events() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/auditd/src/audit.cc:401
#6  0x0000000000b92ec9 in run (this=0x7f423ea28b90) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#7  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#8  0x00007f4242567ea5 in start_thread (arg=0x7f423a9f7700) at pthread_create.c:307
#9  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (LWP 9369):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00000000005f03d6 in __gthread_cond_timedwait (__abs_timeout=0x7f423b5e6980, __mutex=0x7f423ea7b350, __cond=0x7f423ea7b378) 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=<synthetic pointer>, __lock=<synthetic pointer>, __atime=<synthetic pointer>, this=0x7f423ea7b378) 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=<synthetic pointer>, this=0x7f423ea7b378) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:141
#4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=<synthetic pointer>, __lock=<synthetic pointer>, this=0x7f423ea7b378) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:172
#5  ExternalAuthManagerThread::run() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/external_auth_manager_thread.cc:91
#6  0x0000000000ba91f3 in Couchbase::Thread::thread_entry() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:38
#7  0x0000000000b92ec9 in run (this=0x7f423ea28bf0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f4242567ea5 in start_thread (arg=0x7f423b5f8700) at pthread_create.c:307
#10 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (LWP 9365):
#0  0x00007f423fe9dccd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00000000005a9db1 in get_command (buffsize=80, buffer=0x7f423d5ea990 "") at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:57
#2  check_stdin_thread (arg=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:98
#3  0x0000000000b92ec9 in run (this=0x7f423ea28830) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#4  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#5  0x00007f4242567ea5 in start_thread (arg=0x7f423d5fc700) at pthread_create.c:307
#6  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (LWP 9364):

#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x0000000000b5a08a in __gthread_cond_timedwait (__abs_timeout=0x7f423ddeb9b0, __mutex=<optimized out>, __cond=0x7f423ea20268) at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
#2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f423ea20268) at /usr/local/include/c++/7.3.0/condition_variable:166
#3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f423ea20268) at /usr/local/include/c++/7.3.0/condition_variable:106
#4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__p=..., 
    __atime=..., __lock=..., this=0x7f423ea20268) at /usr/local/include/c++/7.3.0/condition_variable:129
#5  wait_for<long int, std::ratio<1>, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__p=..., __rtime=..., __lock=..., this=0x7f423ea20268)
    at /usr/local/include/c++/7.3.0/condition_variable:145
#6  operator() (__closure=0x7f423ea2fa48) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/spdlog/spdlog-prefix/src/spdlog/include/spdlog/details/periodic_worker-inl.h:25
#7  __invoke_impl<void, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (__f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:60
#8  __invoke<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#9  _M_invoke<0> (this=0x7f423ea2fa48) at /usr/local/include/c++/7.3.0/thread:234
#10 operator() (this=0x7f423ea2fa48) at /usr/local/include/c++/7.3.0/thread:243
#11 std::thread::_State_impl<std::thread::_Invoker<std::tuple<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > > >::_M_run(void) (this=0x7f423ea2fa40)
    at /usr/local/include/c++/7.3.0/thread:186
#12 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#13 0x00007f4242567ea5 in start_thread (arg=0x7f423ddfd700) at pthread_create.c:307
#14 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (LWP 9363):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x0000000000b5a2ca in __gthread_cond_timedwait (__abs_timeout=0x7f423e5ec800, __mutex=<optimized out>, __cond=0x7f423ea35538) at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
#2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f423ea35538) at /usr/local/include/c++/7.3.0/condition_variable:166
---Type <return> to continue, or q <return> to quit---
#3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f423ea35538) at /usr/local/include/c++/7.3.0/condition_variable:106
#4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (
    __p=..., __atime=..., __lock=..., this=0x7f423ea35538) at /usr/local/include/c++/7.3.0/condition_variable:129
#5  wait_for<long int, std::ratio<1, 1000>, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __rtime=<synthetic pointer>, __lock=..., this=0x7f423ea35538)
    at /usr/local/include/c++/7.3.0/condition_variable:145
#6  dequeue_for (wait_duration=..., popped_item=..., this=0x7f423ea35510) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/spdlog/spdlog-prefix/src/spdlog/include/spdlog/details/mpmc_blocking_q.h:58
#7  spdlog::details::thread_pool::process_next_msg_ (this=this@entry=0x7f423ea35510) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/spdlog/spdlog-prefix/src/spdlog/include/spdlog/details/thread_pool-inl.h:99
#8  0x0000000000b5a618 in worker_loop_ (this=0x7f423ea35510) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/spdlog/spdlog-prefix/src/spdlog/include/spdlog/details/thread_pool-inl.h:90
#9  operator() (__closure=<optimized out>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/spdlog/spdlog-prefix/src/spdlog/include/spdlog/details/thread_pool-inl.h:28
#10 __invoke_impl<void, spdlog::details::thread_pool::thread_pool(size_t, size_t, std::function<void()>)::<lambda()> > (__f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:60
#11 __invoke<spdlog::details::thread_pool::thread_pool(size_t, size_t, std::function<void()>)::<lambda()> > (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#12 _M_invoke<0> (this=<optimized out>) at /usr/local/include/c++/7.3.0/thread:234
#13 operator() (this=<optimized out>) at /usr/local/include/c++/7.3.0/thread:243
#14 std::thread::_State_impl<std::thread::_Invoker<std::tuple<spdlog::details::thread_pool::thread_pool(size_t, size_t, std::function<void()>)::<lambda()> > > >::_M_run(void) (this=<optimized out>) at /usr/local/include/c++/7.3.0/thread:186
#15 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#16 0x00007f4242567ea5 in start_thread (arg=0x7f423e5fe700) at pthread_create.c:307
#17 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (LWP 9362):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f4241a755a7 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=0x7f423f3ee220) at src/background_thread.c:452
#4  background_work (ind=<optimized out>, tsd=0x7f423f3ee220) at src/background_thread.c:490
#5  background_thread_entry (ind_arg=<optimized out>) at src/background_thread.c:522
#6  0x00007f4242567ea5 in start_thread (arg=0x7f423f3ff700) at pthread_create.c:307
#7  0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (LWP 9361):
#0  0x00007f423fea8fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f424183c3c5 in epoll_dispatch (base=0x7f423ea68300, tv=<optimized out>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
#2  0x00007f4241833376 in event_base_loop (base=0x7f423ea68300, flags=1) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
#3  0x0000000000c052b7 in folly::EventBase::loopBody (this=this@entry=0x7f423ea7b500, 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  0x0000000000c05786 in folly::EventBase::loop (this=this@entry=0x7f423ea7b500) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315


#5  0x0000000000c07146 in folly::EventBase::loopForever (this=0x7f423ea7b500) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#6  0x0000000000567c4b in memcached_main(int, char**) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/memcached.cc:1026

#7  0x00007f423fdcc555 in __libc_start_main (main=0x53d9a0 <main(int, char**)>, argc=3, argv=0x7ffe91ecf9f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe91ecf9e8) at ../csu/libc-start.c:266
#8  0x0000000000560297 in _start () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/char_traits.h:322

Thread 1 (LWP 9378):
#0  0x00007f423fde03d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:55
#1  0x00007f423fde1ac8 in __GI_abort () at abort.c:90
#2  0x00007f424072b63c in __gnu_cxx::__verbose_terminate_handler() [clone .cold] () from /opt/couchbase/bin/../lib/libstdc++.so.6
#3  0x0000000000b374ab in backtrace_terminate_handler() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:88
#4  0x00007f42407368f6 in __cxxabiv1::__terminate(void (*)()) () from /opt/couchbase/bin/../lib/libstdc++.so.6
#5  0x00007f4240736961 in std::terminate() () from /opt/couchbase/bin/../lib/libstdc++.so.6
#6  0x00007f4240736bf4 in __cxa_throw () from /opt/couchbase/bin/../lib/libstdc++.so.6
#7  0x0000000000539ad4 in cb::throwWithTrace<std::underflow_error> (exception=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/exception/info.hpp:129
#8  0x0000000000832c08 in cb::ThrowExceptionUnderflowPolicy<unsigned long>::underflow () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/char_traits.h:322
#9  0x000000000083308f in store (desired=18446744073709551473, this=0x7f41cca15960) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/atomic_base.h:116
#10 operator= (val=18446744073709551473, this=0x7f41cca15960) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/non_negative_counter.h:360
#11 setNumTotalItems (totalItems=18446744073709551473, this=0x7f41cca15500) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_vb.cc:423
#12 EPVBucket::setNumTotalItems(KVStoreIface&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_vb.cc:1179
#13 0x00000000007442f1 in Warmup::estimateDatabaseItemCount (this=0x7f41cd853a00, shardId=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvshard.h:72
#14 0x000000000074e251 in WarmupEstimateDatabaseItemCount::run (this=0x7f41dbfe6190) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/warmup.cc:266
#15 0x0000000000aaa622 in GlobalTask::execute() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:68
#16 0x0000000000aa7725 in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f42329ed840) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:189
#17 0x0000000000bfbbd0 in operator() (this=0x7f42329ed840) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#18 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f423eafe400, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.1.0-2111.x86_64.debug, CU 0xa3160b8, DIE 0xa399fed>)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#19 0x0000000000be650a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f423eafe400, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#20 0x0000000000bfeb89 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
---Type <return> to continue, or q <return> to quit---
#21 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#22 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#23 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#24 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#25 0x0000000000aa73b4 in operator() (this=0x7f423eabfac0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#26 operator() (__closure=0x7f423eabfac0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
#27 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#28 0x00007f424075fd40 in execute_native_thread_routine () from /opt/couchbase/bin/../lib/libstdc++.so.6
#29 0x00007f4242567ea5 in start_thread (arg=0x7f42329ff700) at pthread_create.c:307
#30 0x00007f423fea89fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
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