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-144/2017-06-10-0226/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-06-10-0226/samba.stderr
   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-06-10-0226/samba.stdout
  
The top commit at the time of the failure was:

commit b64f0b5da640524c5f11b0e7eb2777a39fa04b95
Author: Rowland Penny <rpenny at samba.org>
Date:   Wed Jun 7 15:57:53 2017 +0100

    samba-tool: You cannot add members to a group if the member exists as a sAMAccountName and a CN.
    
    Signed-off-by: Rowland Penny <rpenny at samba.org>
    Reviewed-by: Alexander Bokovoy <ab at samba.org>
    
    Autobuild-User(master): Alexander Bokovoy <ab at samba.org>
    Autobuild-Date(master): Fri Jun  9 23:24:47 CEST 2017 on sn-devel-144