autobuild: intermittent test failure detected

[autobuild]

The autobuild test system 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/2015-08-27-0039/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey/2015-08-27-0039/samba.stderr
   http://git.samba.org/autobuild.flakey/2015-08-27-0039/samba.stdout
  
The top commit at the time of the failure was:

commit dba9e631bd1e1c7e00430b72f0c60b32ee4eeb33
Author: Richard Sharpe <rsharpe at samba.org>
Date:   Mon Aug 24 20:26:42 2015 -0700

    Prevent a crash in Python modules that try to authenticate by ensuring we reject cases where credendials fields are not intialized.
    
    Signed-off-by: Richard Sharpe <rsharpe at samba.org>
    Reviewed-by: Jeremy Allison <jra at samba.org>
    
    Autobuild-User(master): Jeremy Allison <jra at samba.org>
    Autobuild-Date(master): Tue Aug 25 21:45:18 CEST 2015 on sn-devel-104