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-144/2019-04-14-1858/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-144/2019-04-14-1858/samba-none-env.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2019-04-14-1858/samba-none-env.stdout
  
The top commit at the time of the failure was:

commit a187b7ef8fe91d227aeda5a2d9d4400d43c9d4ef
Author: Volker Lendecke <vl at samba.org>
Date:   Wed Sep 19 17:42:51 2018 +0200

    smbd: Remove share_mode_lease and the leases array from share_mode_entry
    
    This also removes the temporary functions introduced during the patchset.
    
    Signed-off-by: Volker Lendecke <vl at samba.org>
    Reviewed-by: Christof Schmitt <cs at samba.org>
    
    Autobuild-User(master): Christof Schmitt <cs at samba.org>
    Autobuild-Date(master): Sun Apr 14 05:18:14 UTC 2019 on sn-devel-144

and the last 50 lines of the stdout log were:

[194(3289)/230 at 29m22s] pidl.test_util
[195(3295)/230 at 29m23s] pidl.typelist
[196(3351)/230 at 29m23s] pidl.util
[197(3423)/230 at 29m23s] pidl.wireshark-conf
[198(3472)/230 at 29m23s] pidl.wireshark-ndr
[199(3512)/230 at 29m23s] tdb.python
[200(3566)/230 at 29m23s] samba.tests.dsdb_lock
[201(3573)/230 at 30m36s] samba.tests.samba_tool.visualize
[202(3584)/230 at 30m39s] samba.tests.samba_tool.provision_password_check
[203(3588)/230 at 30m48s] samba.tests.samba_tool.help
[204(3589)/230 at 31m45s] samba.tests.domain_backup_offline
[205(3593)/230 at 33m7s] samba.tests.lsa_string
[206(3597)/230 at 33m7s] samba.tests.loadparm
[207(3600)/230 at 33m7s] samba4.ldap.index.python
[208(3604)/230 at 33m8s] samba4.blackbox.samba3dump
[209(3605)/230 at 33m8s] samba4.blackbox.upgrade
[210(3613)/230 at 33m34s] samba4.blackbox.provision.py
[211(3620)/230 at 34m22s] samba4.blackbox.provision_fileperms
[212(3622)/230 at 34m31s] samba4.blackbox.supported_features
[213(3628)/230 at 34m40s] samba4.blackbox.start_backup
[214(3631)/230 at 34m48s] samba4.blackbox.upgradeprovision.current
[215(3638)/230 at 35m54s] samba4.blackbox.setpassword.py
[216(3644)/230 at 36m5s] samba4.blackbox.newuser.py
[217(3655)/230 at 36m18s] samba4.blackbox.group.py
[218(3684)/230 at 36m38s] samba4.blackbox.provision-backend
[219(3688)/230 at 36m46s] samba4.blackbox.renamedc.sh
[220(3699)/230 at 37m8s] samba4.dsdb.samdb.ldb_modules.unique_object_sids
[221(3705)/230 at 37m8s] samba4.dsdb.samdb.ldb_modules.encrypted_secrets.tdb
[222(3716)/230 at 37m8s] samba4.dsdb.samdb.ldb_modules.encrypted_secrets.mdb
[223(3727)/230 at 37m8s] lib.audit_logging.audit_logging
UNEXPECTED(failure): lib.audit_logging.audit_logging.test_audit_get_timestamp(none)
REASON: Exception: Exception: difftime(after, actual) >= 0
../../lib/audit_logging/tests/audit_logging_test.c:827: 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 -> 361
samba4.blackbox.upgradeprovision.alpha13 -> 160
samba4.blackbox.upgradeprovision.release-4-0-0 -> 151
samba4.blackbox.schemaupgrade -> 100
samba4.blackbox.dbcheck.release-4-0-0 -> 98
samba4.blackbox.dbcheck.release-4-0-0.quick -> 98
samba4.blackbox.dbcheck.release-4-1-0rc3 -> 96
samba4.blackbox.dbcheck.release-4-1-0rc3.quick -> 94
samba.tests.domain_backup_offline -> 81
samba.tests.dsdb_lock -> 73
ERROR: test failed with exit code 1