autobuild[sn-devel-184]: intermittent test failure detected

[autobuild]

The autobuild test system (on sn-devel-184) 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-184/2019-04-19-1605/flakey.log

The failure seems to be in the "samba-none-env" suite, whose build logs are available here:

   https://git.samba.org/autobuild.flakey.sn-devel-184/2019-04-19-1605/samba-none-env.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-184/2019-04-19-1605/samba-none-env.stdout
  
The top commit at the time of the failure was:

commit 9b30fcda64080592d20de64b384fd6d3d0775cbf
Author: Ralph Wuerthner <ralph.wuerthner at de.ibm.com>
Date:   Mon Mar 25 15:17:07 2019 +0100

    s3:debug: enable logging for early startup failures
    
    Commit c89a33a07a 'debug: Use backends instead of explicitly logging to
    syslog or file' introduced a regression where early startup failures (e.g.
    unable to connect to CTDB) are no longer logged because the debug subsystem
    is not yet fully initialized. Enable logging again with reasonable defaults
    when reopen_logs() is called and the parameter file is not yet parsed.
    
    BUG: https://bugzilla.samba.org/show_bug.cgi?id=13904
    
    Signed-off-by: Ralph Wuerthner <ralph.wuerthner at de.ibm.com>
    Reviewed-by: Stefan Metzmacher <metze at samba.org>
    Reviewed-by: Christof Schmitt <cs at samba.org>
    
    Autobuild-User(master): Christof Schmitt <cs at samba.org>
    Autobuild-Date(master): Thu Apr 18 22:21:15 UTC 2019 on sn-devel-144

and the last 50 lines of the stdout log were:

[200(3566)/230 at 31m56s] samba.tests.dsdb_lock
[201(3573)/230 at 33m9s] samba.tests.samba_tool.visualize
[202(3584)/230 at 33m13s] samba.tests.samba_tool.provision_password_check
[203(3588)/230 at 33m22s] samba.tests.samba_tool.help
[204(3589)/230 at 34m27s] samba.tests.domain_backup_offline
[205(3593)/230 at 35m52s] samba.tests.lsa_string
[206(3597)/230 at 35m53s] samba.tests.loadparm
[207(3600)/230 at 35m53s] samba4.ldap.index.python
[208(3604)/230 at 35m53s] samba4.blackbox.samba3dump
[209(3605)/230 at 35m53s] samba4.blackbox.upgrade
[210(3613)/230 at 36m22s] samba4.blackbox.provision.py
[211(3620)/230 at 37m29s] samba4.blackbox.provision_fileperms
[212(3622)/230 at 37m41s] samba4.blackbox.supported_features
[213(3628)/230 at 37m54s] samba4.blackbox.start_backup
[214(3631)/230 at 38m6s] samba4.blackbox.upgradeprovision.current
[215(3638)/230 at 39m36s] samba4.blackbox.setpassword.py
[216(3644)/230 at 39m51s] samba4.blackbox.newuser.py
[217(3655)/230 at 40m9s] samba4.blackbox.group.py
[218(3684)/230 at 40m37s] samba4.blackbox.provision-backend
[219(3688)/230 at 40m48s] samba4.blackbox.renamedc.sh
[220(3699)/230 at 41m18s] samba4.dsdb.samdb.ldb_modules.unique_object_sids
[221(3705)/230 at 41m18s] samba4.dsdb.samdb.ldb_modules.encrypted_secrets.tdb
[222(3720)/230 at 41m18s] samba4.dsdb.samdb.ldb_modules.encrypted_secrets.mdb
[223(3735)/230 at 41m18s] lib.audit_logging.audit_logging
[224(3750)/230 at 41m18s] lib.audit_logging.audit_logging.errors
[225(3764)/230 at 41m19s] samba4.dsdb.samdb.ldb_modules.audit_util
[226(3781)/230 at 41m19s] samba4.dsdb.samdb.ldb_modules.audit_log
[227(3803)/230 at 41m19s] samba4.dsdb.samdb.ldb_modules.audit_log.errors
[228(3808)/230 at 41m19s] samba4.dsdb.samdb.ldb_modules.group_audit
UNEXPECTED(failure): samba4.dsdb.samdb.ldb_modules.group_audit.test_audit_group_json_no_event(none)
REASON: Exception: Exception: time stamp "2019-04-19T16:05:11.000196+0000" is after finish time "2019-04-19T16:05:10"
../../source4/dsdb/samdb/ldb_modules/tests/test_group_audit.c:1055: error: Failure!

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
samba.tests.docs -> 464
samba4.blackbox.upgradeprovision.alpha13 -> 166
samba4.blackbox.upgradeprovision.release-4-0-0 -> 147
samba4.blackbox.dbcheck.release-4-0-0 -> 106
samba4.blackbox.dbcheck.release-4-0-0.quick -> 106
samba4.blackbox.dbcheck.release-4-1-0rc3 -> 104
samba4.blackbox.dbcheck.release-4-1-0rc3.quick -> 104
samba4.blackbox.schemaupgrade -> 94
samba4.blackbox.upgradeprovision.current -> 90
samba.tests.domain_backup_offline -> 85
ERROR: test failed with exit code 1
Makefile:16: recipe for target 'test' failed