Service 'memcached' exited with status 134 if the vbucket state changes from replica to non-replica after a rollback request is scheduled

Service 'memcached' exited with status 134. Restarting. Messages:

2017-07-13T22:33:13.178748-07:00 FATAL /opt/couchbase/bin/memcached() [0x400000+0x3970a]

2017-07-13T22:33:13.178797-07:00 FATAL /usr/lib/x86_64-linux-gnu/libstdc++.so.6() [0x7f6c26062000+0x5e836]

2017-07-13T22:33:13.178836-07:00 FATAL /usr/lib/x86_64-linux-gnu/libstdc++.so.6() [0x7f6c26062000+0x5e863]

2017-07-13T22:33:13.178895-07:00 FATAL /usr/lib/x86_64-linux-gnu/libstdc++.so.6() [0x7f6c26062000+0x5eaa2]

2017-07-13T22:33:13.178915-07:00 FATAL /opt/couchbase/bin/../lib/../lib/ep.so() [0x7f6c22027000+0x488d5]

2017-07-13T22:33:13.178933-07:00 FATAL /opt/couchbase/bin/../lib/../lib/ep.so() [0x7f6c22027000+0x48aaf]

2017-07-13T22:33:13.178952-07:00 FATAL /opt/couchbase/bin/../lib/../lib/ep.so() [0x7f6c22027000+0xa49ad]

2017-07-13T22:33:13.178970-07:00 FATAL /opt/couchbase/bin/../lib/libplatform_so.so.0.1.0() [0x7f6c2748b000+0x797e]

2017-07-13T22:33:13.178998-07:00 FATAL /lib/x86_64-linux-gnu/libpthread.so.0() [0x7f6c2704e000+0x8182]

2017-07-13T22:33:13.179056-07:00 FATAL /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7f6c25a86000+0xfb30d] hide