autobuild[sn-devel-104]: intermittent test failure detected

The autobuild test system (on sn-devel-104) 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-104/2016-12-14-1203/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey.sn-devel-104/2016-12-14-1203/samba.stderr
   http://git.samba.org/autobuild.flakey.sn-devel-104/2016-12-14-1203/samba.stdout
  
The top commit at the time of the failure was:

commit 91d5ea2ae90140cad0fa8021f07dad3f3d7b7734
Author: Douglas Bagnall <[email protected]>
Date:   Wed Dec 7 11:54:41 2016 +1300

    librpc/ndr/uuid.c: improve speed and accuracy of GUID string parsing
    
    GUID_from_data_blob() was relying on sscanf to parse strings, which was
    slow and quite accepting of invalid GUIDs. Instead we directly read a
    fixed number of hex bytes for each field.
    
    This now passes the samba4.local.ndr.*.guid_from_string_invalid tests.
    
    Signed-off-by: Douglas Bagnall <[email protected]>
    Reviewed-by: Andrew Bartlett <[email protected]>
    
    Autobuild-User(master): Douglas Bagnall <[email protected]>
    Autobuild-Date(master): Wed Dec 14 08:55:42 CET 2016 on sn-devel-144