CbcPillowfight segfaults when passing non-existing collection

Build: 7.6.0-2054

Case 1:

• Create couchbase bucket
• Drop _default collection using REST endpoint
• Start cbcpillowfight

Case 2:

• Create couchbase bucket
• Start cbcpillowfight on non-existing collection using '-collection' flag

Case 1 outcome:

1. /opt/couchbase/bin/cbc-pillowfight -U couchbase://localhost/default -m 64 -M 64 -I 2000 -u Administrator -P password
   Running. Press Ctrl-C to terminate...
   Timeout during population phase, adjust operation timeout, effective "operation_timeout=2.5" (in seconds).
   In this case it seems like unknown collection was specified. Check cluster configuration and retry.
    *** Error in `/opt/couchbase/bin/cbc-pillowfight': free(): invalid pointer: 0x00007f94a80002a8 ***
   ======= Backtrace: =========
   /lib64/libc.so.6(+0x7c619)[0x7f94ae26e619]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(lcbtrace_span_finish+0x3c)[0x7f94afcedffc]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(+0x73b13)[0x7f94afc65b13]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(+0x74df1)[0x7f94afc66df1]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(+0xf0b87)[0x7f94afce2b87]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(+0xf1a04)[0x7f94afce3a04]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(lcb_destroy+0x2ab)[0x7f94afc7c65b]
   /opt/couchbase/bin/cbc-pillowfight[0x40ee4c]
   /lib64/libc.so.6(+0x38a69)[0x7f94ae22aa69]
   /lib64/libc.so.6(+0x38ab5)[0x7f94ae22aab5]
   /opt/couchbase/bin/cbc-pillowfight[0x40e355]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(+0x73c2b)[0x7f94afc65c2b]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(+0x74df1)[0x7f94afc66df1]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(+0xf0b87)[0x7f94afce2b87]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(+0xf0e10)[0x7f94afce2e10]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(+0x4a6b0)[0x7f94afc3c6b0]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(+0x2c1b7)[0x7f94afc1e1b7]
   /opt/couchbase/bin/../lib/libcouchbase.so.8(lcb_wait+0xe6)[0x7f94afceab26]
   /opt/couchbase/bin/cbc-pillowfight[0x40e482]
   /lib64/libpthread.so.0(+0x7e25)[0x7f94ae5bce25]
   /lib64/libc.so.6(clone+0x6d)[0x7f94ae2ea34d]
   ======= Memory map: ========
   00400000-00407000 r--p 00000000 fd:01 102057865                          /opt/couchbase/bin/cbc-pillowfight
   00407000-0043b000 r-xp 00007000 fd:01 102057865                          /opt/couchbase/bin/cbc-pillowfight
   0043b000-0044a000 r--p 0003b000 fd:01 102057865                          /opt/couchbase/bin/cbc-pillowfight
   0044a000-0044b000 r--p 00049000 fd:01 102057865                          /opt/couchbase/bin/cbc-pillowfight
   0044b000-0044c000 rw-p 0004a000 fd:01 102057865                          /opt/couchbase/bin/cbc-pillowfight
   0044c000-0044d000 rw-p 00000000 00:00 0
   012b5000-01398000 rw-p 00000000 00:00 0                                  [heap]
   7f94a8000000-7f94a809b000 rw-p 00000000 00:00 0
   7f94a809b000-7f94ac000000 ---p 00000000 00:00 0
   7f94ad7de000-7f94ad7df000 ---p 00000000 00:00 0
   7f94ad7df000-7f94adfdf000 rw-p 00000000 00:00 0
   7f94adfdf000-7f94adfeb000 r-xp 00000000 fd:01 67173415                   /usr/lib64/libnss_files-2.17.so
   7f94adfeb000-7f94ae1ea000 ---p 0000c000 fd:01 67173415                   /usr/lib64/libnss_files-2.17.so
   7f94ae1ea000-7f94ae1eb000 r--p 0000b000 fd:01 67173415                   /usr/lib64/libnss_files-2.17.so
   7f94ae1eb000-7f94ae1ec000 rw-p 0000c000 fd:01 67173415                   /usr/lib64/libnss_files-2.17.so
   7f94ae1ec000-7f94ae1f2000 rw-p 00000000 00:00 0
   7f94ae1f2000-7f94ae3aa000 r-xp 00000000 fd:01 67173397                   /usr/lib64/libc-2.17.so
   7f94ae3aa000-7f94ae5aa000 ---p 001b8000 fd:01 67173397                   /usr/lib64/libc-2.17.so
   7f94ae5aa000-7f94ae5ae000 r--p 001b8000 fd:01 67173397                   /usr/lib64/libc-2.17.so
   7f94ae5ae000-7f94ae5b0000 rw-p 001bc000 fd:01 67173397                   /usr/lib64/libc-2.17.so
   7f94ae5b0000-7f94ae5b5000 rw-p 00000000 00:00 0
   7f94ae5b5000-7f94ae5cc000 r-xp 00000000 fd:01 67173423                   /usr/lib64/libpthread-2.17.so
   7f94ae5cc000-7f94ae7cb000 ---p 00017000 fd:01 67173423                   /usr/lib64/libpthread-2.17.so
   7f94ae7cb000-7f94ae7cc000 r--p 00016000 fd:01 67173423                   /usr/lib64/libpthread-2.17.so
   7f94ae7cc000-7f94ae7cd000 rw-p 00017000 fd:01 67173423                   /usr/lib64/libpthread-2.17.so
   7f94ae7cd000-7f94ae7d1000 rw-p 00000000 00:00 0
   7f94ae7d1000-7f94ae8d2000 r-xp 00000000 fd:01 67173405                   /usr/lib64/libm-2.17.so
   7f94ae8d2000-7f94aead1000 ---p 00101000 fd:01 67173405                   /usr/lib64/libm-2.17.so
   7f94aead1000-7f94aead2000 r--p 00100000 fd:01 67173405                   /usr/lib64/libm-2.17.so
   7f94aead2000-7f94aead3000 rw-p 00101000 fd:01 67173405                   /usr/lib64/libm-2.17.so
   7f94aead3000-7f94aeb77000 r--p 00000000 fd:01 35278779                   /opt/couchbase/lib/libstdc++.so.6.0.32
   7f94aeb77000-7f94aec93000 r-xp 000a4000 fd:01 35278779                   /opt/couchbase/lib/libstdc++.so.6.0.32
   7f94aec93000-7f94aed21000 r--p 001c0000 fd:01 35278779                   /opt/couchbase/lib/libstdc++.so.6.0.32
   7f94aed21000-7f94aed2c000 r--p 0024d000 fd:01 35278779                   /opt/couchbase/lib/libstdc++.so.6.0.32
   7f94aed2c000-7f94aed2f000 rw-p 00258000 fd:01 35278779                   /opt/couchbase/lib/libstdc++.so.6.0.32
   7f94aed2f000-7f94aed33000 rw-p 00000000 00:00 0
   7f94aed33000-7f94aed3e000 r-xp 00000000 fd:01 35278767                   /opt/couchbase/lib/libsnappy.so.1.1.10
   7f94aed3e000-7f94aef3d000 ---p 0000b000 fd:01 35278767                   /opt/couchbase/lib/libsnappy.so.1.1.10
   7f94aef3d000-7f94aef3e000 r--p 0000a000 fd:01 35278767                   /opt/couchbase/lib/libsnappy.so.1.1.10
   7f94aef3e000-7f94aef3f000 rw-p 0000b000 fd:01 35278767                   /opt/couchbase/lib/libsnappy.so.1.1.10
   7f94aef3f000-7f94aef46000 r-xp 00000000 fd:01 67173427                   /usr/lib64/librt-2.17.so
   7f94aef46000-7f94af145000 ---p 00007000 fd:01 67173427                   /usr/lib64/librt-2.17.so
   7f94af145000-7f94af146000 r--p 00006000 fd:01 67173427                   /usr/lib64/librt-2.17.so
   7f94af146000-7f94af147000 rw-p 00007000 fd:01 67173427                   /usr/lib64/librt-2.17.so
   7f94af147000-7f94af204000 r--p 00000000 fd:01 35256268                   /opt/couchbase/lib/libcrypto.so.3
   7f94af204000-7f94af541000 r-xp 000bd000 fd:01 35256268                   /opt/couchbase/lib/libcrypto.so.3
   7f94af541000-7f94af623000 r--p 003fa000 fd:01 35256268                   /opt/couchbase/lib/libcrypto.so.3
   7f94af623000-7f94af67f000 r--p 004db000 fd:01 35256268                   /opt/couchbase/lib/libcrypto.so.3
   7f94af67f000-7f94af682000 rw-p 00537000 fd:01 35256268                   /opt/couchbase/lib/libcrypto.so.3
   7f94af682000-7f94af685000 rw-p 00000000 00:00 0
   7f94af685000-7f94af6a5000 r--p 00000000 fd:01 35278775                   /opt/couchbase/lib/libssl.so.3
   7f94af6a5000-7f94af702000 r-xp 00020000 fd:01 35278775                   /opt/couchbase/lib/libssl.so.3
   7f94af702000-7f94af722000 r--p 0007d000 fd:01 35278775                   /opt/couchbase/lib/libssl.so.3
   7f94af722000-7f94af72b000 r--p 0009c000 fd:01 35278775                   /opt/couchbase/lib/libssl.so.3Aborted

Case 2 outcome:

1. /opt/couchbase/bin/cbc-pillowfight  -m 64 -M 64 -I 2000 -u Administrator -P password -U couchbase://localhost/travel-sample --collection _default.colec111
   Running. Press Ctrl-C to terminate...
   Timeout during population phase, adjust operation timeout, effective "operation_timeout=2.5" (in seconds).
   In this case it seems like unknown collection was specified. Check cluster configuration and retry.
    Segmentation fault