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-144/2017-11-20-2104/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-11-20-2104/samba.stderr
   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-11-20-2104/samba.stdout
  
The top commit at the time of the failure was:

commit d11473b15df9f1688b6de387b822583f4045ac3d
Author: Gary Lockyer <gary at catalyst.net.nz>
Date:   Fri Nov 3 13:35:41 2017 +1300

    source3: remove sock_exec
    
    Remove the sock_exec code which is no longer needed and additionally has been
    used by exploit code.
    
    This was originally test support code, the tests relying on the sock_exec
    code have been removed.
    
    Past exploits have used sock_exec as a proxy for system() matching a talloc
    destructor prototype.
    
    See for example:
    Exploit for Samba vulnerabilty (CVE-2015-0240) at
        https://gist.github.com/worawit/051e881fc94fe4a49295
        and the Red Hat post at
        https://access.redhat.com/blogs/766093/posts/1976553
    
    Signed-off-by: Gary Lockyer <gary at catalyst.net.nz>
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>
    Reviewed-by: Garming Sam <garming at catalyst.net.nz>
    
    Autobuild-User(master): Andrew Bartlett <abartlet at samba.org>
    Autobuild-Date(master): Mon Nov 20 07:20:13 CET 2017 on sn-devel-144