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-144/2018-09-03-0106/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-144/2018-09-03-0106/samba.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-09-03-0106/samba.stdout
  
The top commit at the time of the failure was:

commit 5d95f79f604d90c2646225a0f2470f05dd71e19e
Author: Ralph Boehme <slow at samba.org>
Date:   Thu Aug 30 15:57:33 2018 +0200

    s3:smbd: add a comment stating that file_close_user() is redundant for SMB2
    
    Bug: https://bugzilla.samba.org/show_bug.cgi?id=13549
    
    Signed-off-by: Ralph Boehme <slow at samba.org>
    Reviewed-by: Jeremy Allison <jra at samba.org>
    
    Autobuild-User(master): Jeremy Allison <jra at samba.org>
    Autobuild-Date(master): Sat Sep  1 01:26:35 CEST 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

[708(3682)/847 at 45m18s] samba4.winbind.dom_name_parse.cmd(s4member_dflt_domain)
[709(3683)/847 at 45m18s] samba4.winbind.dom_name_parse.cmd(s4member_dflt_domain)
[710(3684)/847 at 45m18s] samba4.winbind.dom_name_parse.cmd(s4member)
[711(3685)/847 at 45m19s] samba4.winbind.dom_name_parse.cmd(s4member)
[712(3686)/847 at 45m19s] samba4.winbind.dom_name_parse.cmd(s4member)
[713(3687)/847 at 45m19s] samba4.winbind.dom_name_parse.cmd(s4member)
[714(3688)/847 at 45m19s] samba.nss.test using winbind(s4member:local)(s4member:local)
[715(3689)/847 at 45m19s] samba.tests.gensec(ad_dc_ntvfs:local)
[716(3700)/847 at 45m21s] samba.tests.dcerpc.sam(ad_dc_ntvfs:local)
[717(3703)/847 at 45m21s] samba.tests.dsdb(ad_dc_ntvfs:local)
[718(3730)/847 at 45m27s] samba.tests.dcerpc.bare(ad_dc_ntvfs:local)
[719(3734)/847 at 45m27s] samba.tests.dcerpc.srvsvc(ad_dc_ntvfs:local)
[720(3734)/847 at 45m28s] samba.tests.samba_tool.timecmd(ad_dc_ntvfs:local)
[721(3736)/847 at 45m31s] samba.tests.samba_tool.join(ad_dc_ntvfs:local)
[722(3737)/847 at 45m32s] samba.tests.samba_tool.fsmo(ad_dc_ntvfs:local)
[723(3738)/847 at 45m33s] samba.tests.samba_tool.edit(ad_dc_ntvfs:local)
[724(3741)/847 at 45m35s] samba.tests.samba_tool.gpo(ad_dc_ntvfs:local)
WARNING: The "lsa over netlogon" option is deprecated
WARNING: The "server schannel" option is deprecated
UNEXPECTED(error): samba.tests.samba_tool.gpo.samba.tests.samba_tool.gpo.GpoCmdTestCase.test_aclcheck(ad_dc_ntvfs:local)
REASON: Exception: Exception: Traceback (most recent call last):
  File "/memdisk/autobuild/fl/b1142920/samba/bin/python/samba/tests/samba_tool/gpo.py", line 417, in setUp
    self.assertCmdSuccess(result, out, err, "Ensuring gpo created successfully")
  File "/memdisk/autobuild/fl/b1142920/samba/bin/python/samba/tests/samba_tool/base.py", line 109, in assertCmdSuccess
    exit, out, err, msg))
AssertionError: exit[-1] stdout[] stderr[ERROR(runtime): uncaught exception - (3221225525, 'The object name already exists.')
  File "/memdisk/autobuild/fl/b1142920/samba/bin/python/samba/netcmd/__init__.py", line 183, in _run
    return self.run(*args, **kwargs)
  File "/memdisk/autobuild/fl/b1142920/samba/bin/python/samba/netcmd/gpo.py", line 1240, in run
    create_directory_hier(conn, sharepath)
  File "/memdisk/autobuild/fl/b1142920/samba/bin/python/samba/netcmd/gpo.py", line 371, in create_directory_hier
    conn.mkdir(path)
]: Ensuring gpo created successfully

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.rpc.samr.passwords.lockout on ncacn_np with (ad_dc_ntvfs) -> 225
samba4.rpc.samr.passwords.pwdlastset on ncacn_np with (ad_dc_ntvfs) -> 200
samba3.smbtorture_s3.vfs_aio_fork(simpleserver).RW2(simpleserver) -> 140
samba4.raw.notify(ad_dc_ntvfs) -> 107
samba4.ldb.ldaps with options -U"$USERNAME%$PASSWORD"(ad_dc_ntvfs)(ad_dc_ntvfs) -> 104
samba4.ntvfs.cifs.krb5.base.deny2(ad_dc_ntvfs) -> 57
samba4.base.deny2(ad_dc_ntvfs) -> 57
samba4.nbt.winsreplication(ad_dc_ntvfs) -> 54
samba4.ntvfs.cifs.krb5.base.deny1(ad_dc_ntvfs) -> 53
samba4.base.deny1(ad_dc_ntvfs) -> 52
ERROR: test failed with exit code 1