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-144/2018-12-15-0052/flakey.log

The failure seems to be in the "samba-nt4" suite, whose build logs are available here:

   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-12-15-0052/samba-nt4.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-12-15-0052/samba-nt4.stdout
  
The top commit at the time of the failure was:

commit 8cdfc7bbbde1e3a4a79827bf33cfce49440de0be
Author: Andrew Bartlett <abartlet at samba.org>
Date:   Thu Dec 13 21:02:24 2018 +1300

    travis-ci: Remove hooks for Travis CI (typically used with GitHub)
    
    These will get out of date pretty quickly, so better to remove them now
    that GitLab CI is the documented and supported solution.
    
    This was our first public CI system, used because it is cost-free
    to Open Source projects and integrated with GitHub.
    
    It has served it's purpose now.
    
    Signed-off-by: Andrew Bartlett <abartlet at samba.org>
    Reviewed-by: Gary Lockyer <gary at catalyst.net.nz>
    
    Autobuild-User(master): Andrew Bartlett <abartlet at samba.org>
    Autobuild-Date(master): Fri Dec 14 22:04:20 CET 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

[533(2464)/579 at 21m41s] samba.wbinfo_simple.online-status.domain=$DOMAIN(nt4_dc:local)
[534(2465)/579 at 21m41s] samba.wbinfo_simple.check-secret.domain=$DOMAIN(nt4_dc:local)
[535(2466)/579 at 21m41s] samba.wbinfo_simple.change-secret.domain=$DOMAIN(nt4_dc:local)
[536(2467)/579 at 21m41s] samba.wbinfo_simple.check-secret.domain=$DOMAIN(nt4_dc:local)
[537(2468)/579 at 21m41s] samba.wbinfo_simple.online-status.domain=$DOMAIN(nt4_dc:local)
[538(2469)/579 at 21m41s] samba.wbinfo_simple.domain-users(nt4_dc:local)
[539(2470)/579 at 21m42s] samba.wbinfo_simple.domain-groups(nt4_dc:local)
[540(2471)/579 at 21m42s] samba.wbinfo_simple.name-to-sid=$DC_USERNAME(nt4_dc:local)
[541(2472)/579 at 21m42s] samba.wbinfo_simple.name-to-sid=$DOMAIN/$DC_USERNAME(nt4_dc:local)
[542(2473)/579 at 21m42s] samba.wbinfo_simple.user-info=$DOMAIN/$DC_USERNAME(nt4_dc:local)
[543(2474)/579 at 21m42s] samba.wbinfo_simple.user-groups=$DOMAIN/$DC_USERNAME(nt4_dc:local)
[544(2475)/579 at 21m42s] samba.wbinfo_simple.authenticate=$DOMAIN/$DC_USERNAME%$DC_PASSWORD(nt4_dc:local)
[545(2476)/579 at 21m42s] samba.wbinfo_simple.allocate-uid(nt4_dc:local)
[546(2477)/579 at 21m42s] samba.wbinfo_simple.allocate-gid(nt4_dc:local)
[547(2478)/579 at 21m43s] samba.wbinfo_sids2xids.(nt4_dc:local)(nt4_dc:local)
[548(2479)/579 at 21m49s] samba.ntlm_auth.diagnostics(nt4_dc:local)(nt4_dc:local)
[549(2480)/579 at 21m49s] samba.ntlm_auth.(nt4_dc:local)(nt4_dc:local)
[550(2499)/579 at 21m51s] samba.wbinfo_simple.ping(nt4_member:local)
[551(2500)/579 at 21m51s] samba.wbinfo_simple.separator(nt4_member:local)
[552(2501)/579 at 21m51s] samba.wbinfo_simple.own-domain(nt4_member:local)
[553(2502)/579 at 21m52s] samba.wbinfo_simple.all-domains(nt4_member:local)
[554(2503)/579 at 21m52s] samba.wbinfo_simple.trusted-domains(nt4_member:local)
[555(2504)/579 at 21m52s] samba.wbinfo_simple.domain-info=BUILTIN(nt4_member:local)
[556(2505)/579 at 21m52s] samba.wbinfo_simple.domain-info=$DOMAIN(nt4_member:local)
[557(2506)/579 at 21m52s] samba.wbinfo_simple.online-status(nt4_member:local)
[558(2507)/579 at 21m52s] samba.wbinfo_simple.online-status.domain=BUILTIN(nt4_member:local)
[559(2508)/579 at 21m52s] samba.wbinfo_simple.online-status.domain=$DOMAIN(nt4_member:local)
[560(2509)/579 at 21m52s] samba.wbinfo_simple.check-secret.domain=$DOMAIN(nt4_member:local)
UNEXPECTED(failure): samba.wbinfo_simple.check-secret.domain=SAMBA-TEST.wbinfo(nt4_member:local)
REASON: Exception: Exception: wbcCheckTrustCredentials(SAMBA-TEST): error code was NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND (0xc0000233)
failed to call wbcCheckTrustCredentials: WBC_ERR_AUTH_ERROR
Could not check secret
checking the trust secret for domain SAMBA-TEST via RPC calls failed

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
samba3.raw.notify(nt4_dc) -> 101
samba3.smb2.notify(nt4_dc) -> 82
samba3.rpc.samr.passwords.lockout(nt4_dc) -> 62
samba4.rpc.echo on ncacn_np with object(nt4_dc) -> 60
samba3.rpc.samr.passwords.pwdlastset(nt4_dc) -> 48
samba3.smb2.lease(nt4_dc) -> 45
samba3.smb2.compound_find(nt4_dc) -> 45
samba3.raw.oplock(nt4_dc) -> 44
samba3.smb2.compound_find(nt4_dc) -> 44
samba3.raw.search(nt4_dc) -> 43
ERROR: test failed with exit code 1