Couchbase Server constantly shutting down and restarting after upgrade from 2.1.1-766

Pls look at http://10.3.3.240:8091/index.html#sec=servers, node 10.3.3.239 in particular.

The node is unstable, Couchbase server is restarting every 4 secs as you can see from the GUI log.

--> This happened after the cluster was upgraded from 2.1.1.766 to 3.0.0-1174.
--> After offline upgrade, source cluster was forced to use encrypted xdcr.
--> No replication seems to have happened after this change and node .239 entered a bad state.
--> Seen only on Ubuntu
--> Is probably the reason for MB-12066(yes, there is data loss - 1000 items less on each bucket on C2).

Cbcollect
-------------

[C1]
10.3.3.239 : https://s3.amazonaws.com/bugdb/jira/MB-12066/d30b70e7/10.3.3.239-8252014-2346-couch.tar.gz
10.3.3.240 : https://s3.amazonaws.com/bugdb/jira/MB-12066/4b079374/10.3.3.240-8252014-2340-diag.zip

[C2]
10.3.3.218 : https://s3.amazonaws.com/bugdb/jira/MB-12066/e4f38323/10.3.3.218-8252014-2343-diag.zip
10.3.3.225 : https://s3.amazonaws.com/bugdb/jira/MB-12066/6f010183/10.3.3.225-8252014-2345-diag.zip