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

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-144/2016-11-22-0819/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey.sn-devel-144/2016-11-22-0819/samba.stderr
   http://git.samba.org/autobuild.flakey.sn-devel-144/2016-11-22-0819/samba.stdout
  
The top commit at the time of the failure was:

commit c1a316bea66541410612156e87ab142472518d4f
Author: Garming Sam <[email protected]>
Date:   Tue Jul 26 11:34:05 2016 +1200

    samba_dnsupdate: Raise after the error count is incremented
    
    Signed-off-by: Garming Sam <[email protected]>
    Reviewed-by: Andrew Bartlett <[email protected]>
    
    Autobuild-User(master): Garming Sam <[email protected]>
    Autobuild-Date(master): Tue Nov 22 05:59:40 CET 2016 on sn-devel-144