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-184/2019-05-31-0948/flakey.log

The failure seems to be in the "samba-ad-dc-2" suite, whose build logs are available here:

   https://git.samba.org/autobuild.flakey.sn-devel-184/2019-05-31-0948/samba-ad-dc-2.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-184/2019-05-31-0948/samba-ad-dc-2.stdout
  
The top commit at the time of the failure was:

commit b23d005cdc646e02af3c38852f75e4505070768e
Author: Tim Beale <timbeale at catalyst.net.nz>
Date:   Thu May 30 14:55:52 2019 +1200

    selftest: Don't use global dirs when parsing customdc realm
    
    When creating the customdc, testparm would default to using
    /usr/local/samba sub-directories for creating sockets and lock files.
    Instead, pass in the tmpdir we just created as an option to the command.
    
    Normally this didn't cause a noticeable problem, however, if we run the
    command with UID-wrapper but without socket-wrapper (i.e.
    USE_NAMESPACES=1), then it fails completely.
    
    Signed-off-by: Tim Beale <timbeale at catalyst.net.nz>
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>
    
    Autobuild-User(master): Andrew Bartlett <abartlet at samba.org>
    Autobuild-Date(master): Fri May 31 06:34:36 UTC 2019 on sn-devel-184

and the last 50 lines of the stdout log were:

badPwdCount = '3'
lockoutTime = '132037696426539130'
badPasswordTime = '132037696426539130'
Failed to get kerberos credentials (kerberos required): kinit for lockout1krb5 at SAMBADOMAIN failed (Preauthentication failed)

Wrong username or password: kinit for lockout1krb5 at SAMBADOMAIN failed (Preauthentication failed)

gensec_spnego_create_negTokenInit_step: gssapi_krb5: creating NEG_TOKEN_INIT for ldap/rodc failed (next[(null)]): NT_STATUS_LOGON_FAILURE
Failed to bind - LDAP client internal error: NT_STATUS_LOGON_FAILURE
Failed to connect to 'ldap://rodc' with backend 'ldap': LDAP client internal error: NT_STATUS_LOGON_FAILURE
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
badPwdCount = '3'
lockoutTime = '132037696426539130'
badPasswordTime = '132037696426539130'
Failed to get kerberos credentials (kerberos required): kinit for lockout1krb5 at SAMBADOMAIN failed (Preauthentication failed)

Wrong username or password: kinit for lockout1krb5 at SAMBADOMAIN failed (Preauthentication failed)

gensec_spnego_create_negTokenInit_step: gssapi_krb5: creating NEG_TOKEN_INIT for ldap/rodc failed (next[(null)]): NT_STATUS_LOGON_FAILURE
Failed to bind - LDAP client internal error: NT_STATUS_LOGON_FAILURE
Failed to connect to 'ldap://rodc' with backend 'ldap': LDAP client internal error: NT_STATUS_LOGON_FAILURE
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
badPwdCount = '3'
lockoutTime = '132037696426539130'
badPasswordTime = '132037696426539130'
UNEXPECTED(failure): samba4.ldap.rodc_rwdc.python(rodc).__main__.RodcRwdcCachedTests.test_login_lockout_krb5(rodc:local)
REASON: Exception: Exception: Traceback (most recent call last):
  File "/memdisk/autobuild/fl/b1657058/samba-ad-dc-2/source4/dsdb/tests/python/rodc_rwdc.py", line 305, in test_login_lockout_krb5
    self._test_login_lockout_rodc_rwdc(self.lockout1krb5_creds, userdn)
  File "/memdisk/autobuild/fl/b1657058/samba-ad-dc-2/source4/dsdb/tests/python/rodc_rwdc.py", line 556, in _test_login_lockout_rodc_rwdc
    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.large_ldap.gssapi.python(vampire_dc)(vampire_dc) -> 142
samba.wbinfo_sids2xids.(rodc:local)(rodc:local) -> 16
samba.tests.ntlm_auth(rodc:local) -> 6
samba.tests.dns(vampire_dc:local) -> 5
samba.tests.dns(rodc:local) -> 5
samba.tests.py_credentials(vampire_dc) -> 4
samba4.ldap.rodc.python(rodc)(rodc) -> 2
samba.wbinfo_simple.online-status.domain=$DOMAIN(rodc:local) -> 1
samba.wbinfo_simple.allocate-uid(rodc:local) -> 1
samba.tests.encrypted_secrets(vampire_dc:local) -> 1
ERROR: test failed with exit code 1
Makefile:16: recipe for target 'test' failed