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-144/2017-03-18-0256/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-03-18-0256/samba.stderr
   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-03-18-0256/samba.stdout
  
The top commit at the time of the failure was:

commit ad758cb869ac83534993caa212abc9fe9905ec68
Author: Amitay Isaacs <amitay at gmail.com>
Date:   Tue Mar 14 16:12:55 2017 +1100

    ctdb-readonly: Avoid a tight loop waiting for revoke to complete
    
    BUG: https://bugzilla.samba.org/show_bug.cgi?id=12697
    
    During revoking readonly delegations, if one of the nodes disappears, then
    there is no point re-trying revoking readonly delegation.  The database
    needs to be recovered before the revoke operation can succeed.  So retry
    only after a grace period.
    
    Signed-off-by: Amitay Isaacs <amitay at gmail.com>
    Reviewed-by: Martin Schwenke <martin at meltin.net>
    
    Autobuild-User(master): Martin Schwenke <martins at samba.org>
    Autobuild-Date(master): Fri Mar 17 14:05:57 CET 2017 on sn-devel-144