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-144/2017-03-06-1213/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-03-06-1213/samba.stderr
   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-03-06-1213/samba.stdout
  
The top commit at the time of the failure was:

commit bdce9f5fae979006fa97a398a5bc44eeb9e85875
Author: Stefan Metzmacher <[email protected]>
Date:   Fri Mar 3 12:56:24 2017 +0100

    s3:libads: remove unused fallback to gss_acquire_cred()
    
    Heimdal and all supported versions of MIT krb5 prove gss_krb5_import_cred(),
    so we don't need an #ifdef here.
    
    Signed-off-by: Stefan Metzmacher <[email protected]>
    Reviewed-by: Alexander Bokovoy <[email protected]>
    
    Autobuild-User(master): Stefan Metzmacher <[email protected]>
    Autobuild-Date(master): Mon Mar  6 11:44:54 CET 2017 on sn-devel-144