autobuild[sn-devel-104]: intermittent test failure detected

The autobuild test system (on sn-devel-104) 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-104/2016-12-06-1204/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey.sn-devel-104/2016-12-06-1204/samba.stderr
   http://git.samba.org/autobuild.flakey.sn-devel-104/2016-12-06-1204/samba.stdout
  
The top commit at the time of the failure was:

commit 4e32944b785418ef6d16d921391412d8feb37853
Author: Jose A. Rivera <[email protected]>
Date:   Mon Jul 25 14:58:16 2016 -0500

    ctdb: Add new helper ctdb_etcd_lock
    
    This introduces a mutex helper called ctdb_etcd_lock, which allows CTDB to
    use an existing etcd cluster to provide the functionality of a recovery lock
    using the API outlined in ctdb/doc/cluster_mutex_helper.txt.
    
    Signed-off-by: Jose A. Rivera <[email protected]>
    Reviewed-by: David Disseldorp <[email protected]>
    
    Autobuild-User(master): José A. Rivera <[email protected]>
    Autobuild-Date(master): Mon Dec  5 19:39:10 CET 2016 on sn-devel-144