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/2015-07-24-1305/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey/2015-07-24-1305/samba.stderr
   http://git.samba.org/autobuild.flakey/2015-07-24-1305/samba.stdout
  
The top commit at the time of the failure was:

commit c596ac60a568fdcace8e73e9649e91faf6cba0c8
Author: Adrian Cochrane <adrianc at catalyst.net.nz>
Date:   Mon Jun 8 16:31:38 2015 +1200

    install_with_python: Secure Python download with sha256 checks.
    
    Includes a fallback using md5sum and a refactor to ensure files are cleaned up on failure.
    
    Signed-off-by: Adrian Cochrane <adrianc at catalyst.net.nz>
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>
    Reviewed-by: Martin Schwenke <martin at meltin.net>
    
    Autobuild-User(master): Andrew Bartlett <abartlet at samba.org>
    Autobuild-Date(master): Fri Jul 24 05:19:06 CEST 2015 on sn-devel-104