Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'.
#0  0x00007fe25c730207 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:55
55	  return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
warning: File "/opt/couchbase/lib/libstdc++.so.6.0.28-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load:/usr/bin/mono-gdb.py:/usr/lib64/libthread_db-1.0.so".
To enable execution of this file add
	add-auto-load-safe-path /opt/couchbase/lib/libstdc++.so.6.0.28-gdb.py
line to your configuration file "/root/.gdbinit".
To completely disable this security protection add
	set auto-load safe-path /
line to your configuration file "/root/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
	info "(gdb)Auto-loading safe path"
#0  0x00007fe25c730207 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:55
#1  0x00007fe25c7318f8 in __GI_abort () at abort.c:90
#2  0x00007fe25d07a63c in __gnu_cxx::__verbose_terminate_handler () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/vterminate.cc:95
#3  0x0000000000b4afdb in backtrace_terminate_handler() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:88
#4  0x00007fe25d0858f6 in __cxxabiv1::__terminate(void (*)()) () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_terminate.cc:48
#5  0x00007fe25d085961 in std::terminate () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_terminate.cc:58
#6  0x00007fe25d085bf4 in __cxxabiv1::__cxa_throw (obj=obj@entry=0x7fe1e4002af0, tinfo=tinfo@entry=0x1091510 <typeinfo for boost::exception_detail::error_info_injector<std::logic_error>>, dest=dest@entry=0xbacd10 <boost::exception_detail::error_info_injector<std::logic_error>::~error_info_injector()>) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_throw.cc:95
#7  0x000000000053d1e7 in cb::throwWithTrace<std::logic_error> (exception=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/exception/info.hpp:129
#8  0x00000000008c04ec in ThrowExceptionPolicy<unsigned long>::nonMonotonic () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/char_traits.h:322
#9  0x00000000008c9faf in operator= (v=@0x7fe208fe7110: 7079, this=0x7fe0801a1250) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/item.h:186
#10 ActiveStream::processItems(ActiveStream::OutstandingItemsResult&, std::lock_guard<std::mutex> const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/active_stream.cc:1206
#11 0x00000000008ca39c in ActiveStream::nextCheckpointItemTask(std::lock_guard<std::mutex> const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/active_stream.cc:908
#12 0x00000000008ca4b4 in ActiveStream::nextCheckpointItemTask() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/active_stream.cc:892
#13 0x00000000008d0b79 in ActiveStreamCheckpointProcessorTask::run() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/active_stream_checkpoint_processor_task.cc:52
#14 0x0000000000ab9c59 in GlobalTask::execute(std::basic_string_view<char, std::char_traits<char> >) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:98
#15 0x0000000000ab38ca in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7fe208fe7650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:290
#16 0x0000000000abb00e in operator() (this=0x7fe208fe7650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#17 CancellableCPUExecutor::addWithTask(GlobalTask&, folly::Function<void ()>)::{lambda()#1}::operator()() const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#18 0x0000000000c0f8b0 in operator() (this=0x7fe208fe7840) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#19 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7fe25b151d00, thread=..., task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.1.0-2347.x86_64.debug, CU 0xa407ea7, DIE 0xa48bddc>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#20 0x0000000000bfa34a in folly::CPUThreadPoolExecutor::threadRun (this=0x7fe25b151d00, thread=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#21 0x0000000000c12869 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#22 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#23 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#24 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#25 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#26 0x0000000000ab35c4 in operator() (this=0x7fe25b5e0d00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:50
#27 operator() (__closure=0x7fe25b5e0d00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:50
#28 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#29 0x00007fe25d0aed40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#30 0x00007fe25eeb6dd5 in start_thread (arg=0x7fe208ff9700) at pthread_create.c:307
#31 0x00007fe25c7f7ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111