Appears that test/recovery is hung in jenkins.

See: http://build.wiredtiger.com:8080/job/wiredtiger-test-format-recovery/1206/

Looking at the traces this appears to be a deadlock between an eviction and checkpoint thread (threads 34 and 10 respectively in the attached dump).

From my quick dive, this looks to be related to the PASS_LOCK added as part of WT-2664 and an evict worker not yielding this lock while in a loop waiting for the handle lock held by the checkpointing thread.