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:

   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-10-13-0022/flakey.log

The failure seems to be in the "samba-py3" suite, whose build logs are available here:

   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-10-13-0022/samba-py3.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-10-13-0022/samba-py3.stdout
  
The top commit at the time of the failure was:

commit 2fc855e7d2458249ca6fc8ffdf1d7633ab84cc55
Author: Douglas Bagnall <douglas.bagnall at catalyst.net.nz>
Date:   Thu Oct 11 11:59:52 2018 +1300

    samba-tool drs showrepl: do not crash if no dnsHostName found
    
    This should not happen, but it does sometimes in an autobuild
    environment. Rather than reporting this by crashing, we report it by
    showing there is no DNS name.
    
    Signed-off-by: Douglas Bagnall <douglas.bagnall at catalyst.net.nz>
    
    Autobuild-User(master): Douglas Bagnall <dbagnall at samba.org>
    Autobuild-Date(master): Fri Oct 12 15:27:07 CEST 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

/memdisk/autobuild/fl/b1943534/samba-py3/bin/winbindd: initialize_winbindd_cache: clearing cache and re-creating with version number 2
/memdisk/autobuild/fl/b1943534/samba-py3/bin/winbindd: daemon_ready: STATUS=daemon 'winbindd' finished starting up and ready to serve connections
[1(0)/75 at 0s] samba.tests.auth.python3(ad_dc_ntvfs:local)
[2(10)/75 at 22s] samba.tests.messaging.python3(ad_dc_ntvfs:local)
[3(18)/75 at 23s] samba.tests.gensec.python3(ad_dc_ntvfs:local)
[4(29)/75 at 25s] samba.tests.dcerpc.sam.python3(ad_dc_ntvfs:local)
[5(32)/75 at 25s] samba.tests.dsdb.python3(ad_dc_ntvfs:local)
[6(59)/75 at 34s] samba.tests.dcerpc.bare.python3(ad_dc_ntvfs:local)
[7(63)/75 at 34s] samba.tests.samba_tool.timecmd.python3(ad_dc_ntvfs:local)
[8(65)/75 at 38s] samba.tests.samba_tool.join.python3(ad_dc_ntvfs:local)
[9(66)/75 at 39s] samba.tests.samba_tool.fsmo.python3(ad_dc_ntvfs:local)
[10(67)/75 at 40s] samba.tests.samba_tool.processes.python3(ad_dc_ntvfs:local)
[11(70)/75 at 40s] samba.tests.samba_tool.user.python3(ad_dc_ntvfs:local)
[12(77)/75 at 1m41s] samba.tests.samba_tool.user_wdigest.python3(ad_dc_ntvfs:local)
WARNING: The "lsa over netlogon" option is deprecated
WARNING: The "server schannel" option is deprecated
WARNING: The "lsa over netlogon" option is deprecated
WARNING: The "server schannel" option is deprecated
WARNING: The "lsa over netlogon" option is deprecated
WARNING: The "server schannel" option is deprecated
WARNING: The "lsa over netlogon" option is deprecated
WARNING: The "server schannel" option is deprecated
WARNING: The "lsa over netlogon" option is deprecated
WARNING: The "server schannel" option is deprecated
UNEXPECTED(failure): samba.tests.samba_tool.user_wdigest.python3.samba.tests.samba_tool.user_wdigest.UserCmdWdigestTestCase.test_Wdigest01(ad_dc_ntvfs:local)
REASON: Exception: Exception: Traceback (most recent call last):
  File "/memdisk/autobuild/fl/b1943534/samba-py3/bin/python/samba/tests/samba_tool/user_wdigest.py", line 137, in test_Wdigest01
    self._testWDigest(attribute, expected)
  File "/memdisk/autobuild/fl/b1943534/samba-py3/bin/python/samba/tests/samba_tool/user_wdigest.py", line 114, in _testWDigest
    "%s: %s" % (attribute, expected))
  File "/memdisk/autobuild/fl/b1943534/samba-py3/bin/python/samba/tests/samba_tool/base.py", line 119, in assertMatch
    self.assertIn(string, base, msg)
AssertionError: 'virtualWDigest01: WdigestTestUser:SAMBADOMAIN:1ae3dc56533f64c92071db7850ad8fc0' not found in 'dn: CN=WdigestTestUser,CN=Users,DC=samba,DC=example,DC=com\n\nGot password OK\n' : 'virtualWDigest01: WdigestTestUser:SAMBADOMAIN:1ae3dc56533f64c92071db7850ad8fc0' is not in 'dn: CN=WdigestTestUser,CN=Users,DC=samba,DC=example,DC=com\n\nGot password OK\n'

FAILED (1 failures, 0 errors and 0 unexpected successes in 0 testsuites)

A summary with detailed information can be found in:
  ./bin/ab/summary
TOP 10 slowest tests
samba.tests.samba_tool.user.python3(ad_dc_ntvfs:local) -> 61
samba.tests.dsdb.python3(ad_dc_ntvfs:local) -> 8
samba.tests.samba_tool.timecmd.python3(ad_dc_ntvfs:local) -> 3
samba.tests.samba_tool.fsmo.python3(ad_dc_ntvfs:local) -> 2
samba.tests.gensec.python3(ad_dc_ntvfs:local) -> 2
samba.tests.dcerpc.sam.python3(ad_dc_ntvfs:local) -> 1
samba.tests.auth.python3(ad_dc_ntvfs:local) -> 1
samba.tests.dcerpc.bare.python3(ad_dc_ntvfs:local) -> 1
samba.tests.samba_tool.join.python3(ad_dc_ntvfs:local) -> 1
samba.tests.samba_tool.processes.python3(ad_dc_ntvfs:local) -> 0
ERROR: test failed with exit code 1