Crash in DCP consumer when processing SyncWrite Prepare at end of snapshot under memory pressure

2020-08-16T15:29:52.970470-07:00 CRITICAL *** Fatal error encountered during exception handling ***

2020-08-16T15:29:52.970522-07:00 CRITICAL Caught unhandled std::exception-derived exception. what(): Monotonic<15SnapshotEndInfo> (unlabelled) invariant failed: new value (3132{Memory}) breaks invariant on current value (3132{Memory})

2020-08-16T15:29:53.149420-07:00 CRITICAL Breakpad caught a crash (Couchbase version 7.0.0-2840). Writing crash dump to /opt/couchbase/var/lib/couchbase/crash/c0659945-f084-4b3a-ee89b6a2-5b140b54.dmp before terminating.

2020-08-16T15:29:53.149450-07:00 CRITICAL Stack backtrace of crashed thread:

2020-08-16T15:29:53.149642-07:00 CRITICAL     /opt/couchbase/bin/memcached() [0x400000+0x13d9ed]

2020-08-16T15:29:53.149661-07:00 CRITICAL     /opt/couchbase/bin/memcached(_ZN15google_breakpad16ExceptionHandler12GenerateDumpEPNS0_12CrashContextE+0x3ea) [0x400000+0x153a2a]

2020-08-16T15:29:53.149670-07:00 CRITICAL     /opt/couchbase/bin/memcached(_ZN15google_breakpad16ExceptionHandler13SignalHandlerEiP9siginfo_tPv+0xb8) [0x400000+0x153d68]

2020-08-16T15:29:53.149677-07:00 CRITICAL     /lib64/libpthread.so.0() [0x7f883512d000+0xf5f0]

2020-08-16T15:29:53.149698-07:00 CRITICAL     /lib64/libc.so.6(gsignal+0x37) [0x7f8834d5f000+0x36337]

2020-08-16T15:29:53.149717-07:00 CRITICAL     /lib64/libc.so.6(abort+0x148) [0x7f8834d5f000+0x37a28]

2020-08-16T15:29:53.149748-07:00 CRITICAL     /opt/couchbase/bin/../lib/libstdc++.so.6(_ZN9__gnu_cxx27__verbose_terminate_handlerEv+0x125) [0x7f8835862000+0x91195]

2020-08-16T15:29:53.149757-07:00 CRITICAL     /opt/couchbase/bin/memcached() [0x400000+0x14e482]

2020-08-16T15:29:53.149773-07:00 CRITICAL     /opt/couchbase/bin/../lib/libstdc++.so.6() [0x7f8835862000+0x8ef86]

2020-08-16T15:29:53.149794-07:00 CRITICAL     /opt/couchbase/bin/../lib/libstdc++.so.6() [0x7f8835862000+0x8efd1]

2020-08-16T15:29:53.149808-07:00 CRITICAL     /opt/couchbase/bin/../lib/libstdc++.so.6() [0x7f8835862000+0x8f213]

2020-08-16T15:29:53.149825-07:00 CRITICAL     /opt/couchbase/bin/../lib/libep.so() [0x7f8839009000+0x106087]

2020-08-16T15:29:53.149831-07:00 CRITICAL     /opt/couchbase/bin/../lib/libep.so() [0x7f8839009000+0x1042a6]

2020-08-16T15:29:53.149838-07:00 CRITICAL     /opt/couchbase/bin/../lib/libep.so() [0x7f8839009000+0xcbf43]

2020-08-16T15:29:53.149880-07:00 CRITICAL     /opt/couchbase/bin/../lib/libep.so() [0x7f8839009000+0xd03b7]

2020-08-16T15:29:53.149885-07:00 CRITICAL     /opt/couchbase/bin/../lib/libep.so() [0x7f8839009000+0xd0568]

2020-08-16T15:29:53.149889-07:00 CRITICAL     /opt/couchbase/bin/../lib/libep.so() [0x7f8839009000+0xd1bbb]

2020-08-16T15:29:53.149894-07:00 CRITICAL     /opt/couchbase/bin/../lib/libep.so() [0x7f8839009000+0xb60ab]

2020-08-16T15:29:53.149898-07:00 CRITICAL     /opt/couchbase/bin/../lib/libep.so() [0x7f8839009000+0xb6229]

2020-08-16T15:29:53.150043-07:00 CRITICAL     /opt/couchbase/bin/../lib/libep.so() [0x7f8839009000+0xbaf28]

2020-08-16T15:29:53.150050-07:00 CRITICAL     /opt/couchbase/bin/../lib/libep.so() [0x7f8839009000+0x161b63]

2020-08-16T15:29:53.150056-07:00 CRITICAL     /opt/couchbase/bin/../lib/libep.so() [0x7f8839009000+0x738ff]

2020-08-16T15:29:53.150063-07:00 CRITICAL     /opt/couchbase/bin/../lib/libplatform_so.so.0.1.0() [0x7f8837ae7000+0x10777]

2020-08-16T15:29:53.150069-07:00 CRITICAL     /lib64/libpthread.so.0() [0x7f883512d000+0x7e65]

2020-08-16T15:29:53.150099-07:00 CRITICAL     /lib64/libc.so.6(clone+0x6d) [0x7f8834d5f000+0xfe88d]

num_items=100000,GROUP=P0;durability,EXCLUDE_GROUP=non_dgm;not_for_majority,durability=MAJORITY,active_resident_threshold=70,upgrade_version=7.0.0-2840 -t rebalance_new.rebalance_in_out.RebalanceInOutTests.test_incremental_rebalance_in_out_with_mutation,nodes_init=2,num_items=50000,value_size=512,replicas=2,GROUP=P0;MHbeta;durability;windows