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-144/2019-02-15-0105/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-144/2019-02-15-0105/samba.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2019-02-15-0105/samba.stdout
  
The top commit at the time of the failure was:

commit 08b91f5e0373e3b76a8d3968013b9fc13c9fc82e
Author: Andreas Schneider <asn at samba.org>
Date:   Thu Feb 14 08:19:46 2019 +0100

    gitlab-ci: Rename DOCKER to CONTAINER
    
    This is just a runc container, not tied to docker. See podman.io
    
    Signed-off-by: Andreas Schneider <asn at samba.org>
    Reviewed-by: Björn Jacke <bj at sernet.de>
    
    Autobuild-User(master): Andreas Schneider <asn at cryptomilk.org>
    Autobuild-Date(master): Thu Feb 14 17:32:38 CET 2019 on sn-devel-144

and the last 50 lines of the stdout log were:

[163(766)/217 at 16m55s] samba4.rpc.echo.testdenied(rodc:local)
[164(776)/217 at 16m58s] samba4.blackbox.smbclient(rodc:local)(rodc:local)
[165(778)/217 at 16m59s] samba.tests.samba_tool.rodc(rodc:local)
[166(787)/217 at 17m23s] samba.blackbox.rpcclient_samlogon(rodc:local)
[167(791)/217 at 17m24s] samba.blackbox.rpcclient_samlogon_testallowed(rodc:local)
[168(795)/217 at 17m24s] samba.blackbox.rpcclient_samlogon_testdenied(rodc:local)
[169(799)/217 at 17m25s] samba4.drs.ridalloc_exop.python(vampire_dc)(vampire_dc)
[170(810)/217 at 19m37s] samba4.drs.samba_tool_drs.python(vampire_dc)(vampire_dc:local)
[171(824)/217 at 20m58s] samba4.drs.samba_tool_drs_showrepl.python(vampire_dc)(vampire_dc:local)
[172(828)/217 at 21m3s] samba4.drs.replica_sync.python(vampire_dc)(vampire_dc:local)
[173(844)/217 at 22m11s] samba4.drs.delete_object.python(vampire_dc)(vampire_dc)
[174(846)/217 at 22m16s] samba4.drs.fsmo.python(vampire_dc)(vampire_dc)
[175(851)/217 at 22m24s] samba4.drs.repl_move.python(vampire_dc)(vampire_dc)
[176(872)/217 at 24m29s] samba4.drs.getnc_exop.python(vampire_dc)(vampire_dc)
[177(884)/217 at 24m38s] samba4.drs.getnc_unpriv.python(vampire_dc)(vampire_dc)
[178(888)/217 at 24m42s] samba4.drs.linked_attributes_drs.python(vampire_dc)(vampire_dc)
[179(891)/217 at 24m44s] samba4.drs.link_conflicts.python(vampire_dc)(vampire_dc)
[180(903)/217 at 27m12s] samba4.drs.samba_tool_drs.python(promoted_dc)(promoted_dc:local)
[181(917)/217 at 28m41s] samba4.drs.samba_tool_drs_showrepl.python(promoted_dc)(promoted_dc:local)
[182(921)/217 at 28m49s] samba4.drs.replica_sync.python(promoted_dc)(promoted_dc:local)
[183(937)/217 at 30m41s] samba4.drs.delete_object.python(promoted_dc)(promoted_dc)
[184(939)/217 at 30m48s] samba4.drs.fsmo.python(promoted_dc)(promoted_dc)
[185(944)/217 at 30m57s] samba4.drs.repl_move.python(promoted_dc)(promoted_dc)
[186(965)/217 at 32m18s] samba4.drs.getnc_exop.python(promoted_dc)(promoted_dc)
UNEXPECTED(failure): samba4.drs.getnc_exop.python(promoted_dc).getnc_exop.DrsReplicaSyncTestCase.test_link_utdv_hwm(promoted_dc)
REASON: Exception: Exception: Traceback (most recent call last):
  File "/memdisk/autobuild/fl/b466429/samba/source4/torture/drs/python/getnc_exop.py", line 401, in test_link_utdv_hwm
    expected_links=[ou2_managedBy_dc3])
  File "/memdisk/autobuild/fl/b466429/samba/source4/torture/drs/python/drs_base.py", line 364, in _check_replication
    dn_ordered=dn_ordered)
  File "/memdisk/autobuild/fl/b466429/samba/source4/torture/drs/python/drs_base.py", line 399, in _check_ctr6
    "Received unexpected objects (%s)" % ctr6_dns)
AssertionError: 6 != 5 : Received unexpected objects (['CN=test_anc_dc_3299762549,OU=get_anc2,OU=get_anc1,OU=test_getncchanges,DC=samba,DC=example,DC=com', 'OU=get_anc1,OU=test_getncchanges,DC=samba,DC=example,DC=com', 'OU=test_getncchanges,DC=samba,DC=example,DC=com', 'CN=get_anc3,OU=get_anc2,OU=get_anc1,OU=test_getncchanges,DC=samba,DC=example,DC=com', 'OU=DrsOU2\\0ACNF:653c08db-7351-42c7-ac34-2819d26a1f2f,CN=LostAndFound,DC=samba,DC=example,DC=com', 'OU=get_anc2,OU=get_anc1,OU=test_getncchanges,DC=samba,DC=example,DC=com'])

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
samba4.ldap.rodc_rwdc.python(rodc)(rodc:local) -> 367
samba4.drs.link_conflicts.python(vampire_dc)(vampire_dc) -> 148
samba3.smbtorture_s3.vfs_aio_fork(simpleserver).RW2(simpleserver) -> 134
samba4.drs.ridalloc_exop.python(vampire_dc)(vampire_dc) -> 133
samba4.drs.repl_move.python(vampire_dc)(vampire_dc) -> 124
samba4.drs.replica_sync.python(promoted_dc)(promoted_dc:local) -> 112
samba4.drs.samba_tool_drs.python(promoted_dc)(promoted_dc:local) -> 90
samba4.drs.repl_move.python(promoted_dc)(promoted_dc) -> 81
samba4.drs.samba_tool_drs.python(vampire_dc)(vampire_dc:local) -> 80
samba4.drs.replica_sync.python(vampire_dc)(vampire_dc:local) -> 68
ERROR: test failed with exit code 1