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:

   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-04-26-0903/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-04-26-0903/samba.stderr
   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-04-26-0903/samba.stdout
  
The top commit at the time of the failure was:

commit 2f1cc560dc6937d0fd7ce485ea091b979d98e53b
Author: Andrew Bartlett <abartlet at samba.org>
Date:   Tue Mar 28 21:55:47 2017 +1300

    s4-messaging: Add helpful comments
    
    Signed-off-by: Andrew Bartlett <abartlet at samba.org>
    Reviewed-by: Stefan Metzmacher <metze at samba.org>
    
    Autobuild-User(master): Stefan Metzmacher <metze at samba.org>
    Autobuild-Date(master): Wed Apr 26 03:09:19 CEST 2017 on sn-devel-144