autobuild[sn-devel-144]: intermittent test failure detected

[autobuild]

The autobuild test system (on sn-devel-144) has detected an intermittent failing test in 
the current master tree.

The autobuild log of the failure is available here:

   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-05-01-0629/flakey.log

The failure seems to be in the "ctdb" suite, whose build logs are available here:

   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-05-01-0629/ctdb.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-05-01-0629/ctdb.stdout
  
The top commit at the time of the failure was:

commit aefe444d17a2eee3c0ff38bd34cf9e3f012ecf51
Author: Jeremy Allison <jra at samba.org>
Date:   Fri Apr 27 14:25:54 2018 -0700

    ceph: VFS: Add asynchronous fsync to ceph module, fake using synchronous call.
    
    This will allow me to ultimately simplify the VFS by removing the synchronous
    fsync VFS call.
    
    BUG: https://bugzilla.samba.org/show_bug.cgi?id=13412
    
    Signed-off-by: Jeremy Allison <jra at samba.org>
    Reviewed-by: Ralph Boehme <slow at samba.org>
    
    Autobuild-User(master): Ralph Böhme <slow at samba.org>
    Autobuild-Date(master): Mon Apr 30 21:48:55 CEST 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

 PASSED  tests/tool/ctdb.unban.003.sh
 PASSED  tests/tool/ctdb.uptime.001.sh
 PASSED  tests/tool/ctdb.writekey.001.sh
 PASSED  tests/simple/00_ctdb_init.sh
 PASSED  tests/simple/00_ctdb_onnode.sh
 PASSED  tests/simple/01_ctdb_version.sh
 PASSED  tests/simple/02_ctdb_listvars.sh
 PASSED  tests/simple/03_ctdb_getvar.sh
 PASSED  tests/simple/04_ctdb_setvar.sh
 PASSED  tests/simple/05_ctdb_listnodes.sh
 PASSED  tests/simple/06_ctdb_getpid.sh
 PASSED  tests/simple/07_ctdb_process_exists.sh
 PASSED  tests/simple/08_ctdb_isnotrecmaster.sh
 PASSED  tests/simple/09_ctdb_ping.sh
 PASSED  tests/simple/11_ctdb_ip.sh
 PASSED  tests/simple/12_ctdb_getdebug.sh
 PASSED  tests/simple/13_ctdb_setdebug.sh
 PASSED  tests/simple/14_ctdb_statistics.sh
 PASSED  tests/simple/15_ctdb_statisticsreset.sh
 PASSED  tests/simple/16_ctdb_config_add_ip.sh
 PASSED  tests/simple/17_ctdb_config_delete_ip.sh
 PASSED  tests/simple/18_ctdb_reloadips.sh
 PASSED  tests/simple/19_ip_takeover_noop.sh
 PASSED  tests/simple/20_delip_iface_gc.sh
 PASSED  tests/simple/21_ctdb_attach.sh
 PASSED  tests/simple/23_ctdb_moveip.sh
 PASSED  tests/simple/24_ctdb_getdbmap.sh
 PASSED  tests/simple/25_dumpmemory.sh
 PASSED  tests/simple/26_ctdb_config_check_error_on_unreachable_ctdb.sh
 PASSED  tests/simple/27_ctdb_detach.sh
 PASSED  tests/simple/28_zero_eventscripts.sh
 PASSED  tests/simple/31_ctdb_disable.sh
 PASSED  tests/simple/32_ctdb_enable.sh
 PASSED  tests/simple/35_ctdb_getreclock.sh
 PASSED  tests/simple/41_ctdb_stop.sh
 PASSED  tests/simple/42_ctdb_continue.sh
 PASSED  tests/simple/43_stop_recmaster_yield.sh
 PASSED  tests/simple/51_message_ring.sh
 PASSED  tests/simple/52_fetch_ring.sh
 PASSED  tests/simple/53_transaction_loop.sh
 PASSED  tests/simple/54_transaction_loop_recovery.sh
 PASSED  tests/simple/55_ctdb_ptrans.sh
 PASSED  tests/simple/56_replicated_transaction_recovery.sh
 PASSED  tests/simple/58_ctdb_restoredb.sh
*FAILED* tests/simple/60_recoverd_missing_ip.sh

522/523 tests passed

Removing TEST_VAR_DIR=/memdisk/autobuild/fl/b90844/ctdb/ctdb/tests/var
autotest exited with exit status 1