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-184/2019-04-02-1027/flakey.log

The failure seems to be in the "samba-ad-dc-6" suite, whose build logs are available here:

   https://git.samba.org/autobuild.flakey.sn-devel-184/2019-04-02-1027/samba-ad-dc-6.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-184/2019-04-02-1027/samba-ad-dc-6.stdout
  
The top commit at the time of the failure was:

commit 92c726dc7a83834ee0e49d83e676b02f7687f5cd
Author: Kristján Valur <kristjan at rvx.is>
Date:   Tue Mar 12 09:33:15 2019 +0000

    make some auth functions return an NTSTATUS like other similar functions for better diagnostics.
    
    Signed-off-by: Kristján Valur <kristjan at rvx.is>
    Reviewed-by: Andreas Schneider <asn at samba.org>
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>
    
    Autobuild-User(master): Andrew Bartlett <abartlet at samba.org>
    Autobuild-Date(master): Tue Apr  2 02:12:48 UTC 2019 on sn-devel-144

and the last 50 lines of the stdout log were:

lockoutTime = '131986744294717530'
badPasswordTime = '131986744294717530'
logonCount = '4'
lastLogon = '131986744259232520'
lastLogonTimestamp = '131986744182028090'
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kerberos credentials (kerberos required): kinit for lockout1krb5 at SAMBA.EXAMPLE.COM failed (Clients credentials have been revoked)

Account locked out: kinit for lockout1krb5 at SAMBA.EXAMPLE.COM failed (Clients credentials have been revoked)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 = '131986744294717530'
badPasswordTime = '131986744294717530'
logonCount = '4'
lastLogon = '131986744259232520'
lastLogonTimestamp = '131986744182028090'
userAccountControl = '512'
msDS-User-Account-Control-Computed = '16'
UNEXPECTED(failure): samba4.ldap.password_lockout.python(ad_dc_slowtests).__main__.PasswordTestsWithSleep.test_login_lockout_krb5(ad_dc_slowtests)
REASON: Exception: Exception: Traceback (most recent call last):
  File "/memdisk/autobuild/fl/b1001804/samba-ad-dc-6/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/b1001804/samba-ad-dc-6/source4/dsdb/tests/python/password_lockout_base.py", line 562, in _test_login_lockout
    msDSUserAccountControlComputed=dsdb.UF_LOCKOUT)
  File "/memdisk/autobuild/fl/b1001804/samba-ad-dc-6/source4/dsdb/tests/python/password_lockout_base.py", line 180, in _check_account
    self.assertEquals(uinfo5.bad_password_count, effective_bad_password_count)
AssertionError: 0 != 3

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.vlv.python(ad_dc_slowtests)(ad_dc_slowtests) -> 757
samba4.ldap.confidential_attr.python(ad_dc_slowtests)(ad_dc_slowtests) -> 584
samba4.rpc.samr.passwords.lockout on ncacn_np with (ad_dc_slowtests) -> 245
samba4.rpc.samr.passwords.pwdlastset on ncacn_np with (ad_dc_slowtests) -> 215
samba4.rpc.samlogon on ncacn_np with (ad_dc_slowtests) -> 78
samba4.rpc.samr.passwords on ncacn_np with (ad_dc_slowtests) -> 34
samba4.rpc.samr.passwords.badpwdcount on ncacn_np with (ad_dc_slowtests) -> 30
samba4.rpc.samr.large-dc on ncacn_np with (ad_dc_slowtests) -> 21
samba4.rpc.samr.users on ncacn_np with (ad_dc_slowtests) -> 11
samba4.rpc.samr.users.privileges on ncacn_np with (ad_dc_slowtests) -> 5
ERROR: test failed with exit code 1
Makefile:16: recipe for target 'test' failed