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-144/2018-12-11-0232/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-144/2018-12-11-0232/samba.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-12-11-0232/samba.stdout
  
The top commit at the time of the failure was:

commit f7516971b566f6099abcaf4e6ad42102cc6c9b07
Author: Noel Power <noel.power at suse.com>
Date:   Mon Dec 10 07:36:15 2018 +0000

    CI: Adjust CI tasks for new python3 autobuild.py default
    
    Now that autobuild has defaulted to python3 (via shebang) we no longer
    need to explicity call autobuild.py with 'python3'
    
    Signed-off-by: Noel Power <noel.power at suse.com>
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>
    
    Autobuild-User(master): Noel Power <npower at samba.org>
    Autobuild-Date(master): Mon Dec 10 14:32:24 CET 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

[780(4622)/855 at 1h29m57s] samba4.ldap.secdesc.python(ad_dc_ntvfs)(ad_dc_ntvfs)
[781(4705)/855 at 1h32m2s] samba4.ldap.acl.python(ad_dc_ntvfs)(ad_dc_ntvfs)
[782(4758)/855 at 1h33m31s] samba4.ldap.passwords.python(ad_dc_ntvfs)(ad_dc_ntvfs)
[783(4776)/855 at 1h33m55s] samba4.ldap.confidential_attr.python(ad_dc_ntvfs)(ad_dc_ntvfs)
[784(4790)/855 at 1h39m52s] samba4.ldap.password_lockout.python(ad_dc_ntvfs)(ad_dc_ntvfs)
[785(4814)/855 at 1h43m5s] samba4.tombstone_reanimation.python(ad_dc_ntvfs)
[786(4826)/855 at 1h43m11s] samba.tests.upgradeprovisionneeddc(ad_dc_ntvfs:local)
[787(4837)/855 at 1h43m13s] samba4.deletetest.python(ad_dc_ntvfs)(ad_dc_ntvfs)
[788(4841)/855 at 1h43m15s] samba4.blackbox.spn.py(ad_dc_ntvfs:local)(ad_dc_ntvfs:local)
[789(4852)/855 at 1h43m20s] samba4.rpc.samr.large-dc.one(vampire_dc)
[790(4855)/855 at 1h43m29s] samba4.rpc.samr.large-dc.two(vampire_dc)
[791(4858)/855 at 1h43m38s] samba4.rpc.echo(rodc)
[792(4868)/855 at 1h43m42s] samba4.rpc.echo(rodc:local)
[793(4878)/855 at 1h43m45s] samba4.rpc.echo.testallowed(rodc:local)
[794(4888)/855 at 1h43m49s] samba4.rpc.echo.testdenied(rodc:local)
[795(4898)/855 at 1h43m52s] samba4.blackbox.smbclient(rodc:local)(rodc:local)
[796(4900)/855 at 1h43m53s] samba.tests.samba_tool.rodc(rodc:local)
[797(4909)/855 at 1h44m24s] samba.blackbox.rpcclient_samlogon(rodc:local)
[798(4913)/855 at 1h44m24s] samba.blackbox.rpcclient_samlogon_testallowed(rodc:local)
[799(4917)/855 at 1h44m25s] samba.blackbox.rpcclient_samlogon_testdenied(rodc:local)
[800(4921)/855 at 1h44m25s] samba4.drs.ridalloc_exop.python(vampire_dc)(vampire_dc)
[801(4932)/855 at 1h49m53s] samba4.drs.samba_tool_drs.python(vampire_dc)(vampire_dc:local)
[802(4946)/855 at 1h53m20s] samba4.drs.samba_tool_drs_showrepl.python(vampire_dc)(vampire_dc:local)
[803(4950)/855 at 1h53m34s] samba4.drs.replica_sync.python(vampire_dc)(vampire_dc:local)
UNEXPECTED(error): samba4.drs.replica_sync.python(vampire_dc).replica_sync.DrsReplicaSyncTestCase.test_ReplConflictsRemoteWin_with_child(vampire_dc:local)
REASON: Exception: Exception: Traceback (most recent call last):
  File "/memdisk/autobuild/fl/b1560539/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/b1560539/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)
_ldb.LdbError: (68, 'LDAP error 68 LDAP_ENTRY_ALREADY_EXISTS -  <Entry OU=Test Parent Remote Conflict,OU=replica_sync2415731,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.ldap.rodc_rwdc.python(rodc)(rodc:local) -> 484
samba4.ldap.confidential_attr.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 358
samba4.drs.ridalloc_exop.python(vampire_dc)(vampire_dc) -> 327
samba4.ldap.vlv.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 306
samba4.rpc.samr.passwords.lockout on ncacn_np with (ad_dc_ntvfs) -> 234
samba4.rpc.samr.passwords.pwdlastset on ncacn_np with (ad_dc_ntvfs) -> 208
samba4.drs.samba_tool_drs.python(vampire_dc)(vampire_dc:local) -> 207
samba4.ldap.password_lockout.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 192
samba4.ldb.ldaps with options -U"$USERNAME%$PASSWORD"(ad_dc_ntvfs)(ad_dc_ntvfs) -> 137
samba3.smbtorture_s3.vfs_aio_fork(simpleserver).RW2(simpleserver) -> 136
ERROR: test failed with exit code 1