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-144/2018-10-22-0208/flakey.log

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

   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-10-22-0208/samba.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-10-22-0208/samba.stdout
  
The top commit at the time of the failure was:

commit d15a00babf3e2940a03fd9a70c1c54951f4f8660
Author: Andreas Schneider <asn at samba.org>
Date:   Wed Sep 26 14:47:20 2018 +0200

    s3:smbcontrol: Simplify the return code check
    
    Signed-off-by: Andreas Schneider <asn at samba.org>
    Reviewed-by: Jeremy Allison <jra at samba.org>
    
    Autobuild-User(master): Jeremy Allison <jra at samba.org>
    Autobuild-Date(master): Sat Oct 20 02:17:56 CEST 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

[784(4781)/850 at 1h20m59s] samba4.deletetest.python(ad_dc_ntvfs)(ad_dc_ntvfs)
[785(4785)/850 at 1h21m1s] samba4.blackbox.spn.py(ad_dc_ntvfs:local)(ad_dc_ntvfs:local)
[786(4796)/850 at 1h21m6s] samba4.rpc.samr.large-dc.one(vampire_dc)
[787(4799)/850 at 1h21m14s] samba4.rpc.samr.large-dc.two(vampire_dc)
[788(4802)/850 at 1h21m23s] samba4.rpc.echo(rodc)
[789(4812)/850 at 1h21m27s] samba4.rpc.echo(rodc:local)
[790(4822)/850 at 1h21m31s] samba4.rpc.echo.testallowed(rodc:local)
[791(4832)/850 at 1h21m34s] samba4.rpc.echo.testdenied(rodc:local)
[792(4842)/850 at 1h21m37s] samba4.blackbox.smbclient(rodc:local)(rodc:local)
[793(4844)/850 at 1h21m38s] samba.tests.samba_tool.rodc(rodc:local)
[794(4853)/850 at 1h22m9s] samba.blackbox.rpcclient_samlogon(rodc:local)
[795(4857)/850 at 1h22m10s] samba.blackbox.rpcclient_samlogon_testallowed(rodc:local)
[796(4861)/850 at 1h22m10s] samba.blackbox.rpcclient_samlogon_testdenied(rodc:local)
[797(4865)/850 at 1h22m11s] samba4.drs.ridalloc_exop.python(vampire_dc)(vampire_dc)
[798(4876)/850 at 1h27m37s] samba4.drs.samba_tool_drs.python(vampire_dc)(vampire_dc:local)
[799(4890)/850 at 1h30m56s] samba4.drs.samba_tool_drs_showrepl.python(vampire_dc)(vampire_dc:local)
[800(4894)/850 at 1h31m9s] samba4.drs.replica_sync.python(vampire_dc)(vampire_dc:local)
[801(4910)/850 at 1h34m55s] samba4.drs.delete_object.python(vampire_dc)(vampire_dc)
[802(4912)/850 at 1h35m4s] samba4.drs.fsmo.python(vampire_dc)(vampire_dc)
[803(4917)/850 at 1h35m21s] samba4.drs.repl_move.python(vampire_dc)(vampire_dc)
[804(4938)/850 at 1h38m46s] samba4.drs.getnc_exop.python(vampire_dc)(vampire_dc)
[805(4950)/850 at 1h39m8s] samba4.drs.getnc_unpriv.python(vampire_dc)(vampire_dc)
[806(4954)/850 at 1h39m14s] samba4.drs.linked_attributes_drs.python(vampire_dc)(vampire_dc)
[807(4957)/850 at 1h39m16s] samba4.drs.link_conflicts.python(vampire_dc)(vampire_dc)
[808(4969)/850 at 1h44m2s] samba4.drs.samba_tool_drs.python(promoted_dc)(promoted_dc:local)
UNEXPECTED(error): samba4.drs.samba_tool_drs.python(promoted_dc).samba_tool_drs.SambaToolDrsTests.test_samba_tool_kcc(promoted_dc:local)
REASON: Exception: Exception: Traceback (most recent call last):
  File "/memdisk/autobuild/fl/b1638756/samba/source4/torture/drs/python/samba_tool_drs.py", line 81, in test_samba_tool_kcc
    self.cmdline_creds))
  File "bin/python/samba/tests/__init__.py", line 402, in check_output
    raise BlackboxProcessError(retcode, line, stdoutdata, stderrdata)
BlackboxProcessError: Command '/memdisk/autobuild/fl/b1638756/samba/bin/samba-tool drs kcc localdc -USAMBADOMAIN/Administrator%locDCpass1'; exit status 255; stdout: ''; stderr: 'ERROR(runtime): DsExecuteKCC failed - (3221356597, 'The operation cannot be performed.')
'

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

A summary with detailed information can be found in:
  ./bin/ab/summary
TOP 10 slowest tests
samba4.ldap.rodc_rwdc.python(rodc)(rodc:local) -> 451
samba4.drs.ridalloc_exop.python(vampire_dc)(vampire_dc) -> 326
samba4.ldap.confidential_attr.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 308
samba4.drs.link_conflicts.python(vampire_dc)(vampire_dc) -> 286
samba4.ldap.vlv.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 233
samba4.rpc.samr.passwords.lockout on ncacn_np with (ad_dc_ntvfs) -> 226
samba4.drs.replica_sync.python(vampire_dc)(vampire_dc:local) -> 226
samba4.drs.repl_move.python(vampire_dc)(vampire_dc) -> 206
samba4.rpc.samr.passwords.pwdlastset on ncacn_np with (ad_dc_ntvfs) -> 200
samba4.drs.samba_tool_drs.python(vampire_dc)(vampire_dc:local) -> 200
ERROR: test failed with exit code 1