(gdb) bt full
#0  0x00007f07ad659387 in raise () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f07ad65aa78 in abort () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007f07ae1b7195 in __gnu_cxx::__verbose_terminate_handler () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/vterminate.cc:95
        terminating = false
        t = <optimized out>
#3  0x000000000054c012 in backtrace_terminate_handler () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:86
No locals.
#4  0x00007f07ae1b4f86 in __cxxabiv1::__terminate (handler=<optimized out>) at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:47
No locals.
#5  0x00007f07ae1b4fd1 in std::terminate () at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_terminate.cc:57
No locals.
#6  0x00007f07ae1b5213 in __cxxabiv1::__cxa_throw (obj=obj@entry=0x7f0750000940, tinfo=0x7f07ae49aad8 <typeinfo for std::underflow_error>, dest=0x7f07ae1ca4f0 <std::underflow_error::~underflow_error()>)
    at /tmp/deploy/gcc-7.3.0/libstdc++-v3/libsupc++/eh_throw.cc:93
        globals = <optimized out>
        header = 0x7f07500008c0
#7  0x00007f07b18c7174 in cb::ThrowExceptionUnderflowPolicy<unsigned long>::underflow (this=<optimized out>, desired=<optimized out>, current=<optimized out>, arg=<optimized out>)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/non_negative_counter.h:48
No locals.
#8  0x00007f07b1a9809b in fetch_sub (arg=1, this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/non_negative_counter.h:160
        current = <optimized out>
        desired = 18446744073709551615
#9  operator-- (this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/non_negative_counter.h:222
No locals.
#10 decrementDiskCount (this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/collections/vbucket_manifest_entry.h:92
No locals.
#11 decrementDiskCount (entry=..., this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/collections/vbucket_manifest.h:1025
No locals.
#12 decrementDiskCount (this=0x7f0790d70190) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/collections/vbucket_manifest.h:374
No locals.
#13 Collections::VB::Flush::decrementDiskCount (this=<optimized out>, key=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/collections/flush.cc:51
No locals.
#14 0x00007f07b1a613a5 in saveDocsCallback (oldInfo=<optimized out>, newInfo=0x7f076faf2490, context=0x7f0790d70a30) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:2077
        cbCtx = 0x7f0790d70a30
        newKey = {keydata = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
              _M_p = 0x7f0792eabaa0 <Address 0x7f0792eabaa0 out of bounds>}, _M_string_length = 19, {_M_local_buf = "\023\000\000\000\000\000\000\000\022\000\000\000\000\000\000", _M_allocated_capacity = 19}}}
        onDiskMutationType = Delete
        docKey = {<DocKeyInterface<DocKey>> = {<No data fields>}, buffer = {static npos = <optimized out>, buf = 0x7f0792eabaa0 <Address 0x7f0792eabaa0 out of bounds>, len = 19}, encoding = Yes}
#15 0x00007f07b161d9db in do_save_callback (valueNew=<optimized out>, valueOld=0x7f0790d70330, key=0x7f075a2f6160, rq=0x7f0790d706a0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_modify.cc:431
        infoNew = 0x7f076faf2490
        infoOld = 0x7f0793066970
#16 modify_node (rq=rq@entry=0x7f0790d706a0, nptr=nptr@entry=0x7f075a96d038, start=66, start@entry=52, end=end@entry=71, dst=dst@entry=0x7f075a96cb38)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_modify.cc:537
        cmp_val = <optimized out>
        cmp_key = {buf = 0x7f0790320e0f <Address 0x7f0790320e0f out of bounds>, size = 19}
        val_buf = {buf = 0x7f0790320e22 <Address 0x7f0790320e22 out of bounds>, size = 41}
        advance = 1
        nodebuf = 0x7f0790320b00 <Address 0x7f0790320b00 out of bounds>
        bufpos = 843
        nodebuflen = 1103
        errcode = <optimized out>
        local_result = 0x7f075a96d068
#17 0x00007f07b161d3b1 in modify_node (rq=rq@entry=0x7f0790d706a0, nptr=nptr@entry=0x7f075a96cb08, start=52, start@entry=50, end=end@entry=211, dst=dst@entry=0x7f075a96a0c8)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_modify.cc:647
        range_end = 71
        cmp_key = {buf = 0x7f079040f46a <Address 0x7f079040f46a out of bounds>, size = 19}
        val_buf = {buf = 0x7f079040f47d <Address 0x7f079040f47d out of bounds>, size = 30}
        cmp_val = <optimized out>
        nodebuf = 0x7f079040f400 <Address 0x7f079040f400 out of bounds>
        bufpos = 155
        nodebuflen = 972
        errcode = <optimized out>
        local_result = 0x7f075a96cb38
---Type <return> to continue, or q <return> to quit---
#18 0x00007f07b161d6d4 in modify_node (rq=rq@entry=0x7f0790d706a0, nptr=nptr@entry=0x7f075b1a1d80, start=50, start@entry=0, end=211, dst=dst@entry=0x7f075a96a010)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_modify.cc:610
        cmp_key = {buf = 0x7f076faf1f88 <Address 0x7f076faf1f88 out of bounds>, size = 20}
        val_buf = {buf = 0x7f076faf1f9c <Address 0x7f076faf1f9c out of bounds>, size = 30}
        cmp_val = <optimized out>
        nodebuf = 0x7f076faf1f50 <Address 0x7f076faf1f50 out of bounds>
        bufpos = 106
        nodebuflen = 106
        errcode = <optimized out>
        local_result = 0x7f075a96a0c8
#19 0x00007f07b161e349 in modify_btree (rq=rq@entry=0x7f0790d706a0, root=0x7f075b1a1d80, errcode=errcode@entry=0x7f0790d705d4) at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/btree_modify.cc:809
        a = 0x7f07903aa420
        ret_ptr = 0x7f075b1a1d80
#20 0x00007f07b16328c0 in update_indexes (save_callback_ctx=<optimized out>, save_callback=<optimized out>, numdocs=<optimized out>, idvals=<optimized out>, ids=<optimized out>, seqvals=<optimized out>, seqs=0x7f075a2f5010, 
    db=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_save.cc:238
        size = 70
        seqrq = {cmp = {compare = 0x301d00}, file = 0x1, num_actions = 0, actions = 0xfffffffffffffff8, fetch_callback = 0x1, fetch_callback_ctx = 0x7f07af96b110 <je_bin_infos+80>, reduce = 0x100000001, rereduce = 0x1, 
          user_reduce_ctx = 0x7f07afb76118 <je_tcache_bin_info>, purge_kp = 0x7f0793209560, purge_kv = 0x7f0793220880, enable_purging = -1828048128, guided_purge_ctx = 0x7f07930a36a8, compacting = 511, kv_chunk_threshold = 0, 
          kp_chunk_threshold = -1864955824, save_callback = 0x7f07930a3300, save_callback_ctx = 0x0, docinfo_callback = 0x7f0790d709b0}
        errcode = 32519
        new_id_root = <optimized out>
        actbuf = {_M_t = {
            _M_t = {<std::_Tuple_impl<0, fatbuf*, cb::couchstore::FatbufDeletor>> = {<std::_Tuple_impl<1, cb::couchstore::FatbufDeletor>> = {<std::_Head_base<1, cb::couchstore::FatbufDeletor, true>> = {<cb::couchstore::FatbufDeletor> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, fatbuf*, false>> = {_M_head_impl = 0x7f075a1e5000}, <No data fields>}, <No data fields>}}}
        seqacts = 0x7f075a1e5010
        idacts = <optimized out>
        fetcharg = {seqacts = 0x7f075a1e5010, actpos = 57, valpos = 0, deltermbuf = @0x7f075a1e5000}
        idrq = {cmp = {compare = 0x7f07b16411f0 <ebin_cmp(sized_buf const*, sized_buf const*)>}, file = 0x7f07706157c0, num_actions = 211, actions = 0x7f075a1e63d8, 
          fetch_callback = 0x7f07b1631f20 <idfetch_update_cb(couchfile_modify_request*, sized_buf*, sized_buf*, void*)>, fetch_callback_ctx = 0x7f0790d70610, reduce = 0x7f07b1640880
     <by_id_reduce(char*, size_t*, nodelist const*, int, void*)>, rereduce = 0x7f07b1640950 <by_id_rereduce(char*, size_t*, nodelist const*, int, void*)>, user_reduce_ctx = 0x0, purge_kp = 0x0, purge_kv = 0x0, enable_purging = 0, 
          guided_purge_ctx = 0x0, compacting = 0, kv_chunk_threshold = 1279, kp_chunk_threshold = 1279, save_callback = 0x7f07b1a61180 <saveDocsCallback(DocInfo const*, DocInfo const*, void*)>, save_callback_ctx = 0x7f0790d70a30, 
          docinfo_callback = 0x7f07b1623a90 <by_id_read_docinfo(_docinfo**, _sized_buf const*, _sized_buf const*)>}
        new_seq_root = <optimized out>
#21 couchstore_save_documents_and_callback (db=<optimized out>, docs=<optimized out>, infos=<optimized out>, numdocs=<optimized out>, options=options@entry=3, 
    save_cb=save_cb@entry=0x7f07b1a61180 <saveDocsCallback(DocInfo const*, DocInfo const*, void*)>, save_cb_ctx=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/couchstore/src/couch_save.cc:424
        CL_item = {_M_t = {
            _M_t = {<std::_Tuple_impl<0, CouchLatencyItem*, std::default_delete<CouchLatencyItem> >> = {<std::_Tuple_impl<1, std::default_delete<CouchLatencyItem> >> = {<std::_Head_base<1, std::default_delete<CouchLatencyItem>, true>> = {<std::default_delete<CouchLatencyItem>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, CouchLatencyItem*, false>> = {_M_head_impl = 0x0}, <No data fields>}, <No data fields>}}}
        CL_item_ptr = {value = {_M_b = {_M_p = 0x0}, static is_always_lock_free = <error reading variable: No global symbol "std::atomic<CouchLatencyItem*>::is_always_lock_free".>}}
        CL_lat_collector = <optimized out>
        CL_timer = {blockTimer = {dest = 0x0, start = {__d = {__r = 0}}, name = 0x0, out = 0x0}}
        term_meta_size = <optimized out>
        fb = {_M_t = {
            _M_t = {<std::_Tuple_impl<0, fatbuf*, cb::couchstore::FatbufDeletor>> = {<std::_Tuple_impl<1, cb::couchstore::FatbufDeletor>> = {<std::_Head_base<1, cb::couchstore::FatbufDeletor, true>> = {<cb::couchstore::FatbufDeletor> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, fatbuf*, false>> = {_M_head_impl = 0x7f075a2f5000}, <No data fields>}, <No data fields>}}}
        seqklist = 0x7f075a2f5010
        idklist = <optimized out>
        seqvlist = <optimized out>
        idvlist = <optimized out>
        seq = <optimized out>
#22 0x00007f07b1a703d8 in CouchKVStore::saveDocs (this=this@entry=0x7f07930a3300, vbid=..., docs=..., docinfos=..., kvctx=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:2152
        flags = 3
        maxDBSeqno = 614
        state = <optimized out>
        cs_begin = <optimized out>
        stats = <optimized out>
        info = {version = 1, timestamp = 139670998261093, updateSeqNum = 139670508417792, purgeSeqNum = 1688, headerPosition = 3153152, filename = 0x698 <Address 0x698 out of bounds>, docCount = 1688, deletedCount = 139670461091480, 
          spaceUsed = 211, fileSize = 139670471511568}
        docsLogicalBytes = <optimized out>
        errCode = COUCHSTORE_SUCCESS
        db = {kvstore = @0x7f07930a3300, db = 0x7f07706157c0, fileRev = 13}
#23 0x00007f07b1a70e9a in CouchKVStore::commit2couchstore (this=0x7f07930a3300, commitData=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:2014
        success = true
---Type <return> to continue, or q <return> to quit---
        vbucket2flush = {vbid = 511}
        phosphor_internal_category_enabled_2001 = {_M_b = {_M_p = 0x0}, static is_always_lock_free = <error reading variable: No global symbol "std::atomic<std::atomic<phosphor::CategoryStatus> const*>::is_always_lock_free".>}
        phosphor_internal_category_enabled_temp_2001 = <optimized out>
        phosphor_internal_tpi_2001 = {category = 0x2b667f <Address 0x2b667f out of bounds>, name = 0x2b679b <Address 0x2b679b out of bounds>, type = phosphor::Complete, argument_names = {_M_elems = {
              0x293c9a <Address 0x293c9a out of bounds>, 0x2b67ad <Address 0x2b67ad out of bounds>}}, argument_types = {_M_elems = {phosphor::is_uint, phosphor::is_uint}}}
        phosphor_internal_guard_2001 = {tpi = 0x7f07b1dc2020 <CouchKVStore::commit2couchstore(VB::Commit&)::phosphor_internal_tpi_2001>, enabled = true, arg1 = 511, arg2 = 211, start = {__d = {__r = 3205288833625345}}}
        docs = {<std::_Vector_base<_doc*, std::allocator<_doc*> >> = {_M_impl = {<std::allocator<_doc*>> = {<__gnu_cxx::new_allocator<_doc*>> = {<No data fields>}, <No data fields>}, _M_start = 0x7f0790380800, 
              _M_finish = 0x7f0790380e98, _M_end_of_storage = 0x7f0790380e98}}, <No data fields>}
        docinfos = {<std::_Vector_base<_docinfo*, std::allocator<_docinfo*> >> = {_M_impl = {<std::allocator<_docinfo*>> = {<__gnu_cxx::new_allocator<_docinfo*>> = {<No data fields>}, <No data fields>}, _M_start = 0x7f076d330f00, 
              _M_finish = 0x7f076d331598, _M_end_of_storage = 0x7f076d331598}}, <No data fields>}
        kvctx = {keyWasOnDisk = {
            _M_h = {<std::__detail::_Hashtable_base<DiskDocKey, DiskDocKey, std::__detail::_Identity, std::equal_to<DiskDocKey>, std::hash<DiskDocKey>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, true, true> >> = {<std::__detail::_Hash_code_base<DiskDocKey, DiskDocKey, std::__detail::_Identity, std::hash<DiskDocKey>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, true>> = {<std::__detail::_Hashtable_ebo_helper<0, std::__detail::_Identity, true>> = {<std::__detail::_Identity> = {<No data fields>}, <No data fields>}, <std::__detail::_Hashtable_ebo_helper<1, std::hash<DiskDocKey>, true>> = {<std::hash<DiskDocKey>> = {<No data fields>}, <No data fields>}, <std::__detail::_Hashtable_ebo_helper<2, std::__detail::_Mod_range_hashing, true>> = {<std::__detail::_Mod_range_hashing> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::__detail::_Hashtable_ebo_helper<0, std::equal_to<DiskDocKey>, true>> = {<std::equal_to<DiskDocKey>> = {<std::binary_function<DiskDocKey, DiskDocKey, bool>> = {<No data fields>}, <No data fields>}, <No data fields>}, <No data fields>}, <std::__detail::_Map_base<DiskDocKey, DiskDocKey, std::allocator<DiskDocKey>, std::__detail::_Identity, std::equal_to<DiskDocKey>, std::hash<DiskDocKey>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, true, true>, true>> = {<No data fields>}, <std::__detail::_Insert<DiskDocKey, DiskDocKey, std::allocator<DiskDocKey>, std::__detail::_Identity, std::equal_to<DiskDocKey>, std::hash<DiskDocKey>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, true, true>, true>> = {<std::__detail::_Insert_base<DiskDocKey, DiskDocKey, std::allocator<DiskDocKey>, std::__detail::_Identity, std::equal_to<DiskDocKey>, std::hash<DiskDocKey>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, true, true> >> = {<No data fields>}, <No data fields>}, <std::__detail::_Rehash_base<DiskDocKey, DiskDocKey, std::allocator<DiskDocKey>, std::__detail::_Identity, std::equal_to<DiskDocKey>, std::hash<DiskDocKey>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, true, true>, std::integral_constant<bool, true> >> = {<No data fields>}, <std::__detail::_Equality<DiskDocKey, DiskDocKey, std::allocator<DiskDocKey>, std::__detail::_Identity, std::equal_to<DiskDocKey>, std::hash<DiskDocKey>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, true, true>, true>> = {<No data fields>}, <std::__detail::_Hashtable_alloc<std::allocator<std::__detail::_Hash_node<DiskDocKey, true> > >> = {<std::__detail::_Hashtable_ebo_helper<0, std::allocator<std::__detail::_Hash_node<DiskDocKey, true> >, true>> = {<std::allocator<std::__detail::_Hash_node<DiskDocKey, true> >> = {<__gnu_cxx::new_allocator<std::__detail::_Hash_node<DiskDocKey, true> >> = {<No data fields>}, <No data fields>}, <No data fields>}, <No data fields>}, _M_buckets = 0x7f075af42480, _M_bucket_count = 79, _M_before_begin = {_M_nxt = 0x7f07902f60d0}, _M_element_count = 57, _M_rehash_policy = {static _S_growth_factor = 2, _M_max_load_factor = 1, 
                _M_next_resize = 79}, _M_single_bucket = 0x0}}, commitData = @0x7f0790d70e10, onDiskPrepareDelta = 0}
        errCode = <optimized out>
#24 0x00007f07b1a71535 in CouchKVStore::commit (this=0x7f07930a3300, commitData=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/couch-kvstore/couch-kvstore.cc:1293
No locals.
#25 0x00007f07b1959552 in EPBucket::commit (this=this@entry=0x7f07930a6000, vbid=..., kvstore=..., commitData=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:875
        timer = {dest = 0x7f07930004f0, start = {__d = {__r = 3205288833624778}}, name = 0x7f07b1b103c1 "disk_commit", out = 0x0}
        commit_start = <optimized out>
        res = <optimized out>
        commit_end = <optimized out>
#26 0x00007f07b195d819 in EPBucket::flushVBucket (this=0x7f07930a6000, vbid=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:744
        vb = {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 = 0x7f076d7cef00, _M_refcount = {
                _M_pi = 0x7f0766197240}}, <No data fields>}, lock = {_M_device = 0x7f0792f58fd8, _M_owns = true}}
        toFlush = {items = {<std::_Vector_base<SingleThreadedRCPtr<Item, Item*, std::default_delete<Item> >, std::allocator<SingleThreadedRCPtr<Item, Item*, std::default_delete<Item> > > >> = {
              _M_impl = {<std::allocator<SingleThreadedRCPtr<Item, Item*, std::default_delete<Item> > >> = {<__gnu_cxx::new_allocator<SingleThreadedRCPtr<Item, Item*, std::default_delete<Item> > >> = {<No data fields>}, <No data fields>}, _M_start = 0x0, _M_finish = 0x0, _M_end_of_storage = 0x0}}, <No data fields>}, ranges = {<std::_Vector_base<CheckpointSnapshotRange, std::allocator<CheckpointSnapshotRange> >> = {
              _M_impl = {<std::allocator<CheckpointSnapshotRange>> = {<__gnu_cxx::new_allocator<CheckpointSnapshotRange>> = {<No data fields>}, <No data fields>}, _M_start = 0x0, _M_finish = 0x0, 
                _M_end_of_storage = 0x0}}, <No data fields>}, moreAvailable = true, maxDeletedRevSeqno = {<std::_Optional_base<unsigned long>> = {_M_payload = {{_M_empty = {<No data fields>}, _M_payload = 2}, 
                _M_engaged = true}}, <std::_Enable_copy_move<true, true, true, true, std::optional<unsigned long> >> = {<No data fields>}, <No data fields>}, checkpointType = Disk, flushHandle = {_M_t = {
              _M_t = {<std::_Tuple_impl<0, FlushHandle*, std::default_delete<FlushHandle> >> = {<std::_Tuple_impl<1, std::default_delete<FlushHandle> >> = {<std::_Head_base<1, std::default_delete<FlushHandle>, true>> = {<std::default_delete<FlushHandle>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, FlushHandle*, false>> = {_M_head_impl = 0x7f07706501b0}, <No data fields>}, <No data fields>}}}}
        moreAvailable = EPBucket::Yes
        wakeupCheckpointRemover = EPBucket::Yes
        range = {<std::_Optional_base<snapshot_range_t>> = {_M_payload = {{_M_empty = {<No data fields>}, _M_payload = {start = 614, end = 614}}, 
              _M_engaged = true}}, <std::_Enable_copy_move<true, true, true, true, std::optional<snapshot_range_t> >> = {<No data fields>}, <No data fields>}
        prev = 0x7f076d6c5880
        persistedVbState = <optimized out>
        vbstate = {static CurrentVersion = 3, maxDeletedSeqno = {counter = {_M_elems = "\000\000\000\000\000"}}, highSeqno = 403, purgeSeqno = 0, lastSnapStart = 403, lastSnapEnd = 403, maxCas = 1591782296528748544, 
          hlcCasEpochSeqno = 1, mightContainXattrs = false, supportsNamespaces = true, version = 3, persistedCompletedSeqno = 0, persistedPreparedSeqno = 0, highPreparedSeqno = 0, maxVisibleSeqno = 403, onDiskPrepares = 0, 
          checkpointType = Memory, transition = {failovers = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
                _M_p = 0x7f076d624f50 <Address 0x7f076d624f50 out of bounds>}, _M_string_length = 32, {_M_local_buf = " \000\000\000\000\000\000\000\067\272<\260\a\177\000", _M_allocated_capacity = 32}}, replicationTopology = {
              m_type = nlohmann::detail::null, m_value = {object = 0x0, array = 0x0, string = 0x0, boolean = false, number_integer = 0, number_unsigned = 0, number_float = 0}}, state = vbucket_state_replica}}
        commitData = {collections = {needsPurge = false, mutated = {
              _M_h = {<std::__detail::_Hashtable_base<CollectionID, CollectionID, std::__detail::_Identity, std::equal_to<CollectionID>, std::hash<CollectionID>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, true, true> >> = {<std::__detail::_Hash_code_base<CollectionID, CollectionID, std::__detail::_Identity, std::hash<CollectionID>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, true>> = {<std::__detail::_Hashtable_ebo_helper<0, std::__detail::_Identity, true>> = {<std::__detail::_Identity> = {<No data fields>}, <No data fields>}, <std::__detail::_Hashtable_ebo_helper<1, std::hash<CollectionID>, true>> = {<std::hash<CollectionID>> = {<No data fields>}, <No data fields>}, <std::__detail::_Hashtable_ebo_helper<2, std::__detail::_Mod_range_hashing, true>> = {<std::__detail::_Mod_range_hashing> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::__detail::_Hashtable_ebo_helper<0, std::equal_to<CollectionID>, true>> = {<std::equal_to<CollectionID>> = {<std::binary_function<CollectionID, CollectionID, bool>> = {<No data fields>}, <No data fields>}, <No data fields>}, <No data fields>}, <std::__detail::_Map_base<CollectionID, CollectionID, std::allocator<CollectionID>, std::__detail::_Identity, std::equal_to<CollectionID>, std::hash<CollectionID>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ra---Type <return> to continue, or q <return> to quit---
nged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, true, true>, true>> = {<No data fields>}, <std::__detail::_Insert<CollectionID, CollectionID, std::allocator<CollectionID>, std::__detail::_Identity, std::equal_to<CollectionID>, std::hash<CollectionID>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, true, true>, true>> = {<std::__detail::_Insert_base<CollectionID, CollectionID, std::allocator<CollectionID>, std::__detail::_Identity, std::equal_to<CollectionID>, std::hash<CollectionID>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, true, true> >> = {<No data fields>}, <No data fields>}, <std::__detail::_Rehash_base<CollectionID, CollectionID, std::allocator<CollectionID>, std::__detail::_Identity, std::equal_to<CollectionID>, std::hash<CollectionID>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, true, true>, std::integral_constant<bool, true> >> = {<No data fields>}, <std::__detail::_Equality<CollectionID, CollectionID, std::allocator<CollectionID>, std::__detail::_Identity, std::equal_to<CollectionID>, std::hash<CollectionID>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, true, true>, true>> = {<No data fields>}, <std::__detail::_Hashtable_alloc<std::allocator<std::__detail::_Hash_node<CollectionID, true> > >> = {<std::__detail::_Hashtable_ebo_helper<0, std::allocator<std::__detail::_Hash_node<CollectionID, true> >, true>> = {<std::allocator<std::__detail::_Hash_node<CollectionID, true> >> = {<__gnu_cxx::new_allocator<std::__detail::_Hash_node<CollectionID, true> >> = {<No data fields>}, <No data fields>}, <No data fields>}, <No data fields>}, _M_buckets = 0x7f0792df1cc0, _M_bucket_count = 7, _M_before_begin = {_M_nxt = 0x7f07903b9a60}, _M_element_count = 4, 
                _M_rehash_policy = {static _S_growth_factor = 2, _M_max_load_factor = 1, _M_next_resize = 7}, _M_single_bucket = 0x0}}, manifest = @0x7f076d74d240}, proposedVBState = {static CurrentVersion = 3, maxDeletedSeqno = {
              counter = {_M_elems = "\002\000\000\000\000"}}, highSeqno = 403, purgeSeqno = 0, lastSnapStart = 614, lastSnapEnd = 614, maxCas = 1591782950330236928, hlcCasEpochSeqno = 1, mightContainXattrs = false, 
            supportsNamespaces = true, version = 3, persistedCompletedSeqno = 0, persistedPreparedSeqno = 0, highPreparedSeqno = 0, maxVisibleSeqno = 614, onDiskPrepares = 0, checkpointType = Disk, transition = {failovers = {
                static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7f076d3dc050 <Address 0x7f076d3dc050 out of bounds>}, 
                _M_string_length = 32, {_M_local_buf = " \000\000\000\000\000\000\000\300w\020\254\a\177\000", _M_allocated_capacity = 32}}, replicationTopology = {m_type = nlohmann::detail::null, m_value = {object = 0x0, array = 0x0, 
                  string = 0x0, boolean = false, number_integer = 0, number_unsigned = 0, number_float = 0}}, state = vbucket_state_replica}}}
        proposedVBState = @0x7f0790d70e58: {static CurrentVersion = 3, maxDeletedSeqno = {counter = {_M_elems = "\002\000\000\000\000"}}, highSeqno = 403, purgeSeqno = 0, lastSnapStart = 614, lastSnapEnd = 614, 
          maxCas = 1591782950330236928, hlcCasEpochSeqno = 1, mightContainXattrs = false, supportsNamespaces = true, version = 3, persistedCompletedSeqno = 0, persistedPreparedSeqno = 0, highPreparedSeqno = 0, maxVisibleSeqno = 614, 
          onDiskPrepares = 0, checkpointType = Disk, transition = {failovers = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
                _M_p = 0x7f076d3dc050 <Address 0x7f076d3dc050 out of bounds>}, _M_string_length = 32, {_M_local_buf = " \000\000\000\000\000\000\000\300w\020\254\a\177\000", _M_allocated_capacity = 32}}, replicationTopology = {
              m_type = nlohmann::detail::null, m_value = {object = 0x0, array = 0x0, string = 0x0, boolean = false, number_integer = 0, number_unsigned = 0, number_float = 0}}, state = vbucket_state_replica}}
        maxSeqno = 614
        maxVbStateOpCas = 0
        minSeqno = 404
        flushBatchSize = 211
        mustPersistVBState = false
        hcs = {<std::_Optional_base<unsigned long>> = {_M_payload = {{_M_empty = {<No data fields>}, _M_payload = 0}, 
              _M_engaged = false}}, <std::_Enable_copy_move<true, true, true, true, std::optional<unsigned long> >> = {<No data fields>}, <No data fields>}
        hps = {<std::_Optional_base<unsigned long>> = {_M_payload = {{_M_empty = {<No data fields>}, _M_payload = 0}, 
              _M_engaged = false}}, <std::_Enable_copy_move<true, true, true, true, std::optional<unsigned long> >> = {<No data fields>}, <No data fields>}
        maxVisibleSeqno = {<ThrowExceptionPolicy<unsigned long>> = {label = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
                _M_p = 0x7f0790d70ce0 "unlabelled"}, _M_string_length = 10, {_M_local_buf = "unlabelled\000urged", _M_allocated_capacity = 7812730926796664437}}}, val = 614}
        aggStats = {numItems = 0, totalBytes = 0, totalAgeInMicro = 0}
        flushSuccess = <optimized out>
        highSeqno = <optimized out>
#27 0x00007f07b19b1d7c in Flusher::flushVB (this=this@entry=0x7f0792f4d540) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:306
        vbid = {vbid = 511}
        res = {moreAvailable = (EPBucket::Yes | unknown: 14), numFlushed = 139670929192992, wakeupCkptRemover = (unknown: 80)}
#28 0x00007f07b19b2f49 in Flusher::step (this=0x7f0792f4d540, task=0x7f0792fd2350) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:207
        more = <optimized out>
#29 0x00007f07b19b5da3 in GlobalTask::execute (this=0x7f0792fd2350) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/globaltask.cc:73
        guard = {previous = 0x0}
#30 0x00007f07b19ac70f in ExecutorThread::run (this=0x7f07ac1eb7e0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/executorthread.cc:188
        curTaskDescr = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
            _M_p = 0x7f07ac313560 <Address 0x7f07ac313560 out of bounds>}, _M_string_length = 31, {_M_local_buf = "\037\000\000\000\000\000\000\000\353\303\001\000\000\000\000", _M_allocated_capacity = 31}}
        woketime = <optimized out>
        scheduleOverhead = <optimized out>
        again = <optimized out>
        runtime = <optimized out>
        q = <optimized out>
        tick = 16 '\020'
        guard = {engine = 0x0}
#31 0x00007f07b03bb777 in run (this=0x7f07ad049dd0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:58
No locals.
#32 platform_thread_wrap (arg=0x7f07ad049dd0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:71
        context = {_M_t = {
            _M_t = {<std::_Tuple_impl<0, CouchbaseThread*, std::default_delete<CouchbaseThread> >> = {<std::_Tuple_impl<1, std::default_delete<CouchbaseThread> >> = {<std::_Head_base<1, std::default_delete<CouchbaseThread>, true>> = {<std::default_delete<CouchbaseThread>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0, CouchbaseThread*, false>> = {_M_head_impl = 0x7f07ad049dd0}, <No data fields>}, <No data fields>}}}
#33 0x00007f07ad9f8ea5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#34 0x00007f07ad7218dd in clone () from /lib64/libc.so.6
No symbol table info available.
(gdb)