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-144/2017-02-21-1805/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-02-21-1805/samba.stderr
   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-02-21-1805/samba.stdout
  
The top commit at the time of the failure was:

commit e36e1f7b12291ac818206cadc2b3081a02f62f84
Author: Thomas Nagy <tnagy at waf.io>
Date:   Sat Mar 26 14:35:52 2016 +0100

    build:wafsamba: Remove ambiguous 'if x in conf.env' constructs
    
    Configuration values such as HAVE_STDDEF_H can be set to 0
    to indicate a test failure. Waf 1.5 has a few bugs that
    prevent configuration tests from setting such values
    consistently on failures.
    
    Consequently, conditions such as 'if conf.env.VARNAME' must be
    used to indicate that config test successes are expected.
    Note that conf.env.VARNAME always returns an empty list (False value)
    when no variable is defined so there are no risk of raising
    AttributeError/KeyError exceptions.
    
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>
    Reviewed-by: Uri Simchoni <uri at samba.org>
    
    Autobuild-User(master): Uri Simchoni <uri at samba.org>
    Autobuild-Date(master): Tue Feb 21 13:47:07 CET 2017 on sn-devel-144