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-144/2018-06-30-1959/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-144/2018-06-30-1959/samba.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-06-30-1959/samba.stdout
  
The top commit at the time of the failure was:

commit e84b5020a410b9c2cf736efee60ee704f8ea8f9c
Author: Amitay Isaacs <amitay at gmail.com>
Date:   Mon Jun 25 12:56:45 2018 +1000

    ctdb-common: Correctly handle conf->reload()
    
    Configuration reload should reset the values of configuration options
    missing from the config file to default.
    
    Signed-off-by: Amitay Isaacs <amitay at gmail.com>
    Reviewed-by: Martin Schwenke <martin at meltin.net>
    
    Autobuild-User(master): Martin Schwenke <martins at samba.org>
    Autobuild-Date(master): Fri Jun 29 15:12:37 CEST 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

[807(4957)/855 at 1h21m7s] samba4.drs.replica_sync.python(vampire_dc)(vampire_dc:local)
[808(4973)/855 at 1h24m54s] samba4.drs.delete_object.python(vampire_dc)(vampire_dc)
[809(4975)/855 at 1h26m44s] samba4.drs.fsmo.python(vampire_dc)(vampire_dc)
[810(4980)/855 at 1h27m1s] samba4.drs.repl_move.python(vampire_dc)(vampire_dc)
[811(5001)/855 at 1h28m55s] samba4.drs.getnc_exop.python(vampire_dc)(vampire_dc)
[812(5013)/855 at 1h29m16s] samba4.drs.getnc_unpriv.python(vampire_dc)(vampire_dc)
[813(5017)/855 at 1h29m23s] samba4.drs.linked_attributes_drs.python(vampire_dc)(vampire_dc)
[814(5020)/855 at 1h29m25s] samba4.drs.link_conflicts.python(vampire_dc)(vampire_dc)
[815(5032)/855 at 1h37m14s] samba4.drs.samba_tool_drs.python(promoted_dc)(promoted_dc:local)
[816(5046)/855 at 1h40m26s] samba4.drs.samba_tool_drs_showrepl.python(promoted_dc)(promoted_dc:local)
UNEXPECTED(error): samba4.drs.samba_tool_drs_showrepl.python(promoted_dc).samba_tool_drs_showrepl.SambaToolDrsShowReplTests.test_samba_tool_showrepl_pull_summary_all_good(promoted_dc:local)
REASON: Exception: Exception: Traceback (most recent call last):
  File "/memdisk/autobuild/fl/b801354/samba/source4/torture/drs/python/samba_tool_drs_showrepl.py", line 240, in test_samba_tool_showrepl_pull_summary_all_good
    (self.dc1, self.cmdline_creds))
  File "bin/python/samba/tests/__init__.py", line 384, in check_output
    raise BlackboxProcessError(retcode, line, stdoutdata, stderrdata)
BlackboxProcessError: Command '/memdisk/autobuild/fl/b801354/samba/bin/samba-tool drs showrepl --pull-summary localdc -USAMBADOMAIN/Administrator%locDCpass1'; exit status 1; stdout: 'There are failing connections
Failing outbound connections:
DC=DomainDnsZones,DC=samba,DC=example,DC=com
	Default-First-Site-Name\LOCALVAMPIREDC via RPC
		DSA object GUID: b4a7aacf-380b-4947-b415-d29eff8a2893
		Last attempt @ Sat Jun 30 19:56:30 2018 CEST failed, result 8457 (WERR_DS_DRA_SINK_DISABLED)
		4 consecutive failure(s).
		Last success @ Sat Jun 30 19:36:30 2018 CEST

DC=DomainDnsZones,DC=samba,DC=example,DC=com
	Default-First-Site-Name\PROMOTEDVDC via RPC
		DSA object GUID: 3e84cfbd-a95a-499b-a920-3b9d9b632a4b
		Last attempt @ Sat Jun 30 19:56:31 2018 CEST failed, result 8457 (WERR_DS_DRA_SINK_DISABLED)
		4 consecutive failure(s).
		Last success @ Sat Jun 30 19:36:30 2018 CEST

'; stderr: ''

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) -> 469
samba4.ldap.rodc_rwdc.python(rodc)(rodc:local) -> 439
samba4.drs.ridalloc_exop.python(vampire_dc)(vampire_dc) -> 305
samba4.ldap.vlv.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 230
samba4.drs.replica_sync.python(vampire_dc)(vampire_dc:local) -> 227
samba4.rpc.samr.passwords.lockout on ncacn_np with (ad_dc_ntvfs) -> 224
samba4.rpc.samr.passwords.pwdlastset on ncacn_np with (ad_dc_ntvfs) -> 200
samba4.drs.samba_tool_drs.python(promoted_dc)(promoted_dc:local) -> 192
samba4.drs.samba_tool_drs.python(vampire_dc)(vampire_dc:local) -> 190
samba4.ldap.password_lockout.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 158
ERROR: test failed with exit code 1