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-144/2018-09-12-1451/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-144/2018-09-12-1451/samba.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-09-12-1451/samba.stdout
  
The top commit at the time of the failure was:

commit 3903f6c365014af804066f916a27fa6d886846e3
Author: Martin Schwenke <martin at meltin.net>
Date:   Sun Sep 9 08:11:33 2018 +1000

    ctdb-build: Fix version handling when building tarball
    
    Split get_version() into 2 functions, so that .distversion file can be
    created.
    
    Pair-programmed-with: Amitay Isaacs <amitay at gmail.com>
    Signed-off-by: Martin Schwenke <martin at meltin.net>
    Reviewed-by: Amitay Isaacs <amitay at gmail.com>
    
    Autobuild-User(master): Amitay Isaacs <amitay at samba.org>
    Autobuild-Date(master): Wed Sep 12 05:50:46 CEST 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

Failed to connect to 'ldap://localdc' with backend 'ldap': LDAP client internal error: NT_STATUS_ACCOUNT_LOCKED_OUT
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
badPwdCount = '3'
lockoutTime = '131812300969126410'
badPasswordTime = '131812300969126410'
logonCount = '4'
lastLogon = '131812300932011230'
lastLogonTimestamp = '131812300834944770'
userAccountControl = '512'
msDS-User-Account-Control-Computed = '16'
Failed to get kerberos credentials (kerberos required): kinit for lockout1krb5 at SAMBA.EXAMPLE.COM failed (Clients credentials have been revoked)

Account locked out: kinit for lockout1krb5 at SAMBA.EXAMPLE.COM failed (Clients credentials have been revoked)

gensec_spnego_create_negTokenInit_step: gssapi_krb5: creating NEG_TOKEN_INIT for ldap/localdc failed (next[(null)]): NT_STATUS_ACCOUNT_LOCKED_OUT
Failed to bind - LDAP client internal error: NT_STATUS_ACCOUNT_LOCKED_OUT
Failed to connect to 'ldap://localdc' with backend 'ldap': LDAP client internal error: NT_STATUS_ACCOUNT_LOCKED_OUT
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
badPwdCount = '3'
lockoutTime = '131812300969126410'
badPasswordTime = '131812300969126410'
logonCount = '4'
lastLogon = '131812300932011230'
lastLogonTimestamp = '131812300834944770'
userAccountControl = '512'
msDS-User-Account-Control-Computed = '16'
UNEXPECTED(failure): samba4.ldap.password_lockout.python(ad_dc_ntvfs).__main__.PasswordTestsWithSleep.test_login_lockout_krb5(ad_dc_ntvfs)
REASON: Exception: Exception: Traceback (most recent call last):
  File "/memdisk/autobuild/fl/b2851436/samba/source4/dsdb/tests/python/password_lockout.py", line 1163, in test_login_lockout_krb5
    self._test_login_lockout(self.lockout1krb5_creds)
  File "/memdisk/autobuild/fl/b2851436/samba/source4/dsdb/tests/python/password_lockout_base.py", line 549, in _test_login_lockout
    self.fail()
AssertionError: None

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.confidential_attr.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 1331
samba4.ldap.rodc_rwdc.python(rodc)(rodc:local) -> 1029
samba4.ldap.vlv.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 587
samba4.ldap.secdesc.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 541
samba4.ldap.acl.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 473
samba4.rpc.samr.passwords.lockout on ncacn_np with (ad_dc_ntvfs) -> 231
samba4.rpc.samr.passwords.pwdlastset on ncacn_np with (ad_dc_ntvfs) -> 204
samba4.ldap.dirsync.python(ad_dc_ntvfs)(ad_dc_ntvfs) -> 154
samba3.smbtorture_s3.vfs_aio_fork(simpleserver).RW2(simpleserver) -> 145
samba.tests.emulate.traffic_packet(ad_dc_ntvfs) -> 142
ERROR: test failed with exit code 1