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-144/2018-11-30-0854/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-144/2018-11-30-0854/samba.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-11-30-0854/samba.stdout
  
The top commit at the time of the failure was:

commit e99402235da3ab0ea77f0a68393294088939ab78
Author: Anoop C S <anoopcs at redhat.com>
Date:   Fri Nov 23 14:11:45 2018 +0530

    s3/testparm: Reduce debug level to 1
    
    Adhere to what we document in manual page for testparm that default
    debug level is set to reasonable value 1.
    
    Signed-off-by: Anoop C S <anoopcs at redhat.com>
    Reviewed-by: Ralph Boehme <slow at samba.org>
    Reviewed-by: Andreas Schneider <asn at samba.org>
    
    Autobuild-User(master): Andreas Schneider <asn at cryptomilk.org>
    Autobuild-Date(master): Thu Nov 29 11:52:22 CET 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

[789(4822)/853 at 1h38m32s] samba4.rpc.samr.large-dc.two(vampire_dc)
[790(4825)/853 at 1h38m44s] samba4.rpc.echo(rodc)
[791(4835)/853 at 1h38m48s] samba4.rpc.echo(rodc:local)
[792(4845)/853 at 1h38m51s] samba4.rpc.echo.testallowed(rodc:local)
[793(4855)/853 at 1h38m55s] samba4.rpc.echo.testdenied(rodc:local)
[794(4865)/853 at 1h38m58s] samba4.blackbox.smbclient(rodc:local)(rodc:local)
[795(4867)/853 at 1h39m0s] samba.tests.samba_tool.rodc(rodc:local)
[796(4876)/853 at 1h39m38s] samba.blackbox.rpcclient_samlogon(rodc:local)
[797(4880)/853 at 1h39m39s] samba.blackbox.rpcclient_samlogon_testallowed(rodc:local)
[798(4884)/853 at 1h39m39s] samba.blackbox.rpcclient_samlogon_testdenied(rodc:local)
[799(4888)/853 at 1h39m40s] samba4.drs.ridalloc_exop.python(vampire_dc)(vampire_dc)
[800(4899)/853 at 1h44m50s] samba4.drs.samba_tool_drs.python(vampire_dc)(vampire_dc:local)
[801(4913)/853 at 1h48m54s] samba4.drs.samba_tool_drs_showrepl.python(vampire_dc)(vampire_dc:local)
[802(4917)/853 at 1h49m5s] samba4.drs.replica_sync.python(vampire_dc)(vampire_dc:local)
[803(4933)/853 at 1h52m58s] samba4.drs.delete_object.python(vampire_dc)(vampire_dc)
[804(4935)/853 at 1h53m9s] samba4.drs.fsmo.python(vampire_dc)(vampire_dc)
[805(4940)/853 at 1h53m33s] samba4.drs.repl_move.python(vampire_dc)(vampire_dc)
[806(4961)/853 at 1h57m9s] samba4.drs.getnc_exop.python(vampire_dc)(vampire_dc)
[807(4973)/853 at 1h57m47s] samba4.drs.getnc_unpriv.python(vampire_dc)(vampire_dc)
[808(4977)/853 at 1h57m58s] samba4.drs.linked_attributes_drs.python(vampire_dc)(vampire_dc)
[809(4980)/853 at 1h58m2s] samba4.drs.link_conflicts.python(vampire_dc)(vampire_dc)
[810(4992)/853 at 2h12m10s] samba4.drs.samba_tool_drs.python(promoted_dc)(promoted_dc:local)
[811(5006)/853 at 2h21m18s] samba4.drs.samba_tool_drs_showrepl.python(promoted_dc)(promoted_dc:local)
[812(5010)/853 at 2h21m55s] samba4.drs.replica_sync.python(promoted_dc)(promoted_dc:local)
UNEXPECTED(error): samba4.drs.replica_sync.python(promoted_dc).replica_sync.DrsReplicaSyncTestCase.test_ReplConflictsRemoteWin_with_child(promoted_dc:local)
REASON: Exception: Exception: Traceback (most recent call last):
  File "/memdisk/autobuild/fl/b910811/samba/source4/torture/drs/python/replica_sync.py", line 278, in test_ReplConflictsRemoteWin_with_child
    self.ou2 = self._create_ou(self.ldb_dc2, "OU=Test Parent Remote Conflict")
  File "/memdisk/autobuild/fl/b910811/samba/source4/torture/drs/python/replica_sync.py", line 126, in _create_ou
    samdb.add_ldif(ldif)
  File "bin/python/samba/__init__.py", line 230, in add_ldif
    self.add(msg, controls)
LdbError: (68, 'LDAP error 68 LDAP_ENTRY_ALREADY_EXISTS -  <Entry OU=Test Parent Remote Conflict,OU=replica_sync9419977,DC=samba,DC=example,DC=com already exists> <>')

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.drs.link_conflicts.python(vampire_dc)(vampire_dc) -> 848
samba4.ldap.rodc_rwdc.python(rodc)(rodc:local) -> 580
samba4.drs.samba_tool_drs.python(promoted_dc)(promoted_dc:local) -> 548
samba4.ldap.confidential_attr.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 404
samba4.ldap.vlv.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 357
samba4.drs.ridalloc_exop.python(vampire_dc)(vampire_dc) -> 311
samba4.drs.samba_tool_drs.python(vampire_dc)(vampire_dc:local) -> 243
samba4.drs.replica_sync.python(vampire_dc)(vampire_dc:local) -> 232
samba4.rpc.samr.passwords.lockout on ncacn_np with (ad_dc_ntvfs) -> 227
samba4.drs.repl_move.python(vampire_dc)(vampire_dc) -> 215
ERROR: test failed with exit code 1