(gdb) bt full
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
        set = {__val = {0, 140179823888131, 140179008397616, 0, 140179823892656, 0, 540150480307749759, 688159595, 3963253552, 281470681751460, 0, 0, 0, 0, 0, 0}}
        pid = <optimized out>
        tid = <optimized out>
        ret = <optimized out>
#1  0x00007f7e2860c7f1 in __GI_abort () at abort.c:79
        save_stage = 1
        act = {__sigaction_handler = {sa_handler = 0x3d2ef35793c76730, sa_sigaction = 0x3d2ef35793c76730}, sa_mask = {__val = {0, 0, 0, 4613425733568182272, 0, 140179823888131, 140179820351233, 11, 140179823888000, 10, 140179008397760, 5719984, 140178471440672, 174, 140179820352435, 140179823888000}}, sa_flags = 687993520, sa_restorer = 0xf72ee0 <stderr>}
        sigs = {__val = {32, 0 <repeats 15 times>}}
        __cnt = <optimized out>
        __set = <optimized out>
        __cnt = <optimized out>
        __set = <optimized out>
#2  0x00007f7e29014efc in __gnu_cxx::__verbose_terminate_handler () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/vterminate.cc:95
        terminating = false
        t = <optimized out>
#3  0x0000000000a8cfef in backtrace_terminate_handler () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:87
No locals.
#4  0x00007f7e2901ff96 in __cxxabiv1::__terminate (handler=<optimized out>) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_terminate.cc:48
No locals.
#5  0x00007f7e29020001 in std::terminate () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_terminate.cc:58
No locals.
#6  0x00007f7e29020294 in __cxxabiv1::__cxa_throw (obj=obj@entry=0x7f7df80021a0, tinfo=tinfo@entry=0xb5fa08 <typeinfo for gsl::fail_fast>, dest=dest@entry=0x5747b0 <gsl::fail_fast::~fail_fast()>) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_throw.cc:95
        globals = <optimized out>
        header = 0x7f7df8002120
#7  0x000000000048f847 in gsl::fail_fast_assert (message=0xb7c530 "GSL: Precondition failure at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.cc:983", cond=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/third_party/gsl-lite/include/gsl/gsl-lite.hpp:674
No locals.
#8  VBucket::abort (this=this@entry=0x7f7dec07c700, key=..., prepareSeqno=prepareSeqno@entry=173, abortSeqno=..., cHandle=..., cookie=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.cc:983
        htRes = {pending = {lock = {bucketNum = 24, htLock = {_M_device = 0x7f7dec7b83c0, _M_owns = true}}, value = 0x7f7dec2a2440,
            valueStats = {<std::_Reference_wrapper_base_memfun<HashTable::Statistics, false>> = {<std::_Reference_wrapper_base<HashTable::Statistics>> = {<std::_Weak_result_type<HashTable::Statistics>> = {<std::_Weak_result_type_memfun<HashTable::Statistics, false>> = {<std::_Weak_result_type_impl<HashTable::Statistics>> = {<std::_Maybe_get_result_type<HashTable::Statistics, void>> = {<No data fields>}, <No data fields>}, <No data fields>}, <No data fields>}, <std::_Refwrap_base_arg1<HashTable::Statistics, void>> = {<No data fields>}, <std::_Refwrap_base_arg2<HashTable::Statistics, void>> = {<No data fields>}, <No data fields>}, <No data fields>}, _M_data = 0x7f7dec07c770}, pre = {size = 2131015, metaDataSize = 68,
              uncompressedSize = 2130883, cid = {value = 0}, datatype = 3 '\003', isValid = true, isResident = true, isDeleted = false, isTempItem = false, isSystemItem = false, isPreparedSyncWrite = true}}, committed = 0x0, ht = @0x7f7dec07c718}
        notify = {bySeqno = 11916488, notifyReplication = 48, notifyFlusher = 206, syncWrite = (unknown: 0xfe), itemCountDifference = 32637}
#9  0x00000000008b0c35 in PassiveStream::processAbort (this=0x7f7dec3cbf90, abort=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/passive_stream.cc:812
        vb = {<std::__shared_ptr<VBucket, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<VBucket, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x7f7dec07c700, _M_refcount = {_M_pi = 0x7f7dec7b4f60}}, <No data fields>}
        rv = <optimized out>
#10 0x00000000008b216c in PassiveStream::processBufferedMessages (this=0x7f7dec3cbf90, processed_bytes=@0x7f7dd7fed28c: 0, batchSize=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/passive_stream.cc:472
        ret = cb::engine_errc::success
        response = <synthetic pointer>
        message_bytes = <synthetic pointer>
        seqno = {<std::_Optional_base<long, true, true>> = {<std::_Optional_base_impl<long, std::_Optional_base<long, true, true> >> = {<No data fields>}, _M_payload = {<std::_Optional_payload_base<long>> = {_M_payload = {_M_empty = {<No data fields>}, _M_value = 174},
                _M_engaged = true}, <No data fields>}}, <std::_Enable_copy_move<true, true, true, true, std::optional<long> >> = {<No data fields>}, <No data fields>}
        lh = {_M_device = 0x7f7dec3cc0f0, _M_owns = false}
        count = 5
        total_bytes_processed = 4262213
        failed = false
        noMem = false
#11 0x00000000008a4772 in DcpConsumer::drainStreamsBufferedItems (this=this@entry=0x7f7e183f5040, stream=..., yieldThreshold=10) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/shared_ptr_base.h:1324
        rval = all_processed
        bytesProcessed = 0
        iterations = 0
#12 0x00000000008a48f7 in DcpConsumer::processBufferedItems (this=0x7f7e183f5040) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/consumer.cc:1272
        stream = {<std::__shared_ptr<PassiveStream, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<PassiveStream, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x7f7dec3cbf90, _M_refcount = {_M_pi = 0x7f7dec3cbf80}}, <No data fields>}
        process_ret = all_processed
        vbucket = {vbid = 477}
#13 0x00000000008ab945 in DcpConsumerTask::run (this=0x7f7e184200d0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/consumer.cc:82
        phosphor_internal_category_enabled_71 = {_M_b = {_M_p = 0x0}, static is_always_lock_free = <optimized out>}
        phosphor_internal_category_enabled_temp_71 = <optimized out>
        phosphor_internal_tpi_71 = {category = 0x0, name = 0x0, type = phosphor::TraceEventType::AsyncStart, argument_names = {_M_elems = {0x0, 0x0}}, argument_types = {_M_elems = {phosphor::TraceArgumentType::is_bool, phosphor::TraceArgumentType::is_bool}}}
        phosphor_internal_guard_71 = {tpi = 0xf63020 <DcpConsumerTask::run()::phosphor_internal_tpi_71>, enabled = true, arg1 = {<No data fields>}, arg2 = {<No data fields>}, start = {__d = {__r = 74543869028577}}}
        consumer = {<std::__shared_ptr<DcpConsumer, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<DcpConsumer, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = <optimized out>, _M_refcount = {_M_pi = 0x7f7e183f5000}}, <No data fields>}
        sleepFor = 0
        state = <optimized out>
#14 0x00000000006aaf37 in GlobalTask::execute (this=0x7f7e184200d0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:68
        guard = {previous = 0x0}
#15 0x00000000006a6080 in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}::operator()() const (__closure=0x7f7dd7fed810) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:190
        executedAt = {__d = {__r = <optimized out>}}
        end = {__d = {__r = <optimized out>}}
        scheduleOverhead = {__r = <optimized out>}
        start = {__d = {__r = 74543869027243}}
        runtime = {__r = <optimized out>}
        runAgain = false
        proxy = <error reading variable>
#16 0x0000000000b1ad70 in folly::detail::function::FunctionTraits<void ()>::operator()() (this=0x7f7dd7fed810) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
        fn = @0x7f7dd7fed810: {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x7f7e20233a80, tiny = {__data = "\200:# ~\177\000\000\000\000\000\000\000\000\000\000\260,\r ~\177\000\000\\\027\000\000\000\000\000\000\060\000\000\000\000\000\000\000\340\330\376\327}\177\000", __align = {<No data fields>}}},
          call_ = 0x6a6810 <folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&)>,
          exec_ = 0x6a3720 <folly::detail::function::execSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Op, folly::detail::function::Data*, folly::detail::function::Data*)>}
        fn = <optimized out>
#17 folly::ThreadPoolExecutor::runTask (this=this@entry=0x7f7e2013c800, thread=..., task=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
        rctx = {prev_ = {<std::__shared_ptr<folly::RequestContext, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<folly::RequestContext, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x0, _M_refcount = {_M_pi = 0x0}}, <No data fields>}}
        startTime = {__d = {__r = 74543869024657}}
        stats = {expired = false, waitTime = {__r = 1372443}, runTime = {__r = 0}, enqueueTime = {__d = {__r = 74543867652214}}, requestId = 0}
#18 0x0000000000b02b2a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f7e2013c800, thread=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
        task = {storage_ = {{emptyState = -128 '\200', value = {<folly::ThreadPoolExecutor::Task> = {func_ = {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x7f7e20233a80, tiny = {
                        __data = "\200:# ~\177\000\000\000\000\000\000\000\000\000\000\260,\r ~\177\000\000\\\027\000\000\000\000\000\000\060\000\000\000\000\000\000\000\340\330\376\327}\177\000", __align = {<No data fields>}}},
                    call_ = 0x6a6810 <folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Data&)>,
                    exec_ = 0x6a3720 <folly::detail::function::execSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#1}>(folly::detail::function::Op, folly::detail::function::Data*, folly::detail::function::Data*)>}, enqueueTime_ = {__d = {__r = 74543867652214}}, expiration_ = {__r = 0},
                  expireCallback_ = {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x175c, tiny = {__data = "\\\027\000\000\000\000\000\000\033\027\240\000\000\000\000\000\032\000\000\000\000\000\000\000Ϥ\006+~\177\000\000p\331\376\327}\177\000\000 6'+~\177\000", __align = {<No data fields>}}},
                    call_ = 0x47f6b3 <folly::detail::function::FunctionTraits<void ()>::uninitCall(folly::detail::function::Data&)>, exec_ = 0x0}, context_ = {<std::__shared_ptr<folly::RequestContext, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<folly::RequestContext, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x0,
                      _M_refcount = {_M_pi = 0x0}}, <No data fields>}}, poison = false, priority_ = 0 '\000', queueObserverPayload_ = 0}}, hasValue = true}}
        guard = {list_ = {forbid = true, prev = 0x0, curr = {name = {static npos = <optimized out>, b_ = 0xbc5e0b "CPUThreadPoolExecutor", e_ = 0xbc5e20 ""}}}}
#19 0x0000000000b1dd29 in std::__invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
No locals.
#20 std::__invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
No locals.
#21 std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)>::__call<void, , 0ul, 1ul>(std::tuple<>&&, std::_Index_tuple<0ul, 1ul>) (__args=..., this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
No locals.
#22 std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)>::operator()<, void>() (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
No locals.
#23 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
        fn = <optimized out>
#24 0x00000000006a475d in folly::detail::function::FunctionTraits<void ()>::operator()() (this=0x7f7e27146ec0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:414
        fn = <error reading variable>
#25 CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}::operator()() (__closure=0x7f7e27146ec0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/folly_executorpool.cc:48
        threadNameOpt = {storage_ = {{emptyState = -128 '\200', value = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7f7dd7fed980 "NonIoPool1"}, _M_string_length = 10, {_M_local_buf = "NonIoPool1\000\000\000\000\000",
                  _M_allocated_capacity = 8029725099528449870}}}, hasValue = true}}
        func = <error reading variable func (Cannot access memory at address 0x7f7e27146ec0)>
        func = {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = <optimized out>, tiny = {__data = {<optimized out> <repeats 48 times>}, __align = {<No data fields>}}}, call_ = <optimized out>, exec_ = <optimized out>}
        threadNameOpt = {storage_ = {{emptyState = <optimized out>, value = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = <optimized out>}, _M_string_length = <optimized out>, {_M_local_buf = {<optimized out> <repeats 16 times>},
                  _M_allocated_capacity = <optimized out>}}}, hasValue = <optimized out>}}
#26 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
        fn = <error reading variable>
#27 0x00007f7e290492f0 in std::execute_native_thread_routine (__p=0x7f7e273f14d0) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
        __t = {_M_t = {<std::__uniq_ptr_impl<std::thread::_State, std::default_delete<std::thread::_State> >> = {
              _M_t = {<std::_Tuple_impl<0, std::thread::_State*, std::default_delete<std::thread::_State> >> = {<std::_Tuple_impl<1, std::default_delete<std::thread::_State> >> = {<std::_Head_base<1, std::default_delete<std::thread::_State>, true>> = {<std::default_delete<std::thread::_State>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, std::thread::_State*, false>> = {_M_head_impl = <optimized out>}, <No data fields>}, <No data fields>}}, <No data fields>}}
#28 0x00007f7e2ac356db in start_thread (arg=0x7f7dd7fff700) at pthread_create.c:463
        pd = 0x7f7dd7fff700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140178471515904, -5070645929714207461, 140178471443136, 0, 140179801052368, 140179566141536, 5141665577111827739, 5142310204848649499}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#29 0x00007f7e286ed61f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.