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-144/2018-08-04-1837/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-144/2018-08-04-1837/samba-nt4.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-08-04-1837/samba-nt4.stdout
  
The top commit at the time of the failure was:

commit a3d248f284eb2e5f4fe886310e481b28c9f1c392
Author: Oleksandr Natalenko <oleksandr at redhat.com>
Date:   Fri Aug 3 14:34:47 2018 +0200

    systemd: Only start smb when network interfaces are up
    
    For smb, if the smb.conf contains explicit bindings to the network
    interfaces, the service must wait till network interfaces are up,
    otherwise the service won't be operational.
    
    The 0e571054a61e commit and the BZ 13184 have fixed this for nmb and
    samba, so do exactly the same here, for smb.
    
    BUG: https://bugzilla.samba.org/show_bug.cgi?id=13559
    
    Signed-off-by: Oleksandr Natalenko <oleksandr at redhat.com>
    Reviewed-by: Andreas Schneider <asn at samba.org>
    Reviewed-by: Alexander Bokovoy <ab at samba.org>
    
    Autobuild-User(master): Andreas Schneider <asn at cryptomilk.org>
    Autobuild-Date(master): Fri Aug  3 17:28:52 CEST 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

[516(2402)/563 at 19m10s] samba.wbinfo_simple.online-status.domain=$DOMAIN(nt4_dc:local)
[517(2403)/563 at 19m10s] samba.wbinfo_simple.check-secret.domain=$DOMAIN(nt4_dc:local)
[518(2404)/563 at 19m10s] samba.wbinfo_simple.change-secret.domain=$DOMAIN(nt4_dc:local)
[519(2405)/563 at 19m11s] samba.wbinfo_simple.check-secret.domain=$DOMAIN(nt4_dc:local)
[520(2406)/563 at 19m11s] samba.wbinfo_simple.online-status.domain=$DOMAIN(nt4_dc:local)
[521(2407)/563 at 19m11s] samba.wbinfo_simple.domain-users(nt4_dc:local)
[522(2408)/563 at 19m11s] samba.wbinfo_simple.domain-groups(nt4_dc:local)
[523(2409)/563 at 19m11s] samba.wbinfo_simple.name-to-sid=$DC_USERNAME(nt4_dc:local)
[524(2410)/563 at 19m11s] samba.wbinfo_simple.name-to-sid=$DOMAIN/$DC_USERNAME(nt4_dc:local)
[525(2411)/563 at 19m11s] samba.wbinfo_simple.user-info=$DOMAIN/$DC_USERNAME(nt4_dc:local)
[526(2412)/563 at 19m11s] samba.wbinfo_simple.user-groups=$DOMAIN/$DC_USERNAME(nt4_dc:local)
[527(2413)/563 at 19m11s] samba.wbinfo_simple.authenticate=$DOMAIN/$DC_USERNAME%$DC_PASSWORD(nt4_dc:local)
[528(2414)/563 at 19m11s] samba.wbinfo_simple.allocate-uid(nt4_dc:local)
[529(2415)/563 at 19m11s] samba.wbinfo_simple.allocate-gid(nt4_dc:local)
[530(2416)/563 at 19m11s] samba.wbinfo_sids2xids.(nt4_dc:local)(nt4_dc:local)
[531(2417)/563 at 19m17s] samba.ntlm_auth.diagnostics(nt4_dc:local)(nt4_dc:local)
[532(2418)/563 at 19m18s] samba.ntlm_auth.(nt4_dc:local)(nt4_dc:local)
[533(2437)/563 at 19m19s] samba.wbinfo_simple.ping(nt4_member:local)
[534(2438)/563 at 19m19s] samba.wbinfo_simple.separator(nt4_member:local)
[535(2439)/563 at 19m19s] samba.wbinfo_simple.own-domain(nt4_member:local)
[536(2440)/563 at 19m19s] samba.wbinfo_simple.all-domains(nt4_member:local)
[537(2441)/563 at 19m19s] samba.wbinfo_simple.trusted-domains(nt4_member:local)
[538(2442)/563 at 19m19s] samba.wbinfo_simple.domain-info=BUILTIN(nt4_member:local)
[539(2443)/563 at 19m19s] samba.wbinfo_simple.domain-info=$DOMAIN(nt4_member:local)
[540(2444)/563 at 19m20s] samba.wbinfo_simple.online-status(nt4_member:local)
[541(2445)/563 at 19m20s] samba.wbinfo_simple.online-status.domain=BUILTIN(nt4_member:local)
[542(2446)/563 at 19m20s] samba.wbinfo_simple.online-status.domain=$DOMAIN(nt4_member:local)
[543(2447)/563 at 19m20s] samba.wbinfo_simple.check-secret.domain=$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) -> 97
samba3.smb2.notify(nt4_dc) -> 79
samba3.rpc.samr.passwords.lockout(nt4_dc) -> 62
samba4.rpc.echo on ncacn_np with object(nt4_dc) -> 61
samba3.rpc.samr.passwords.pwdlastset(nt4_dc) -> 49
samba3.smb2.lease(nt4_dc) -> 44
samba3.raw.oplock(nt4_dc) -> 42
samba3.smb2.oplock(nt4_dc) -> 42
samba3.raw.search(nt4_dc) -> 36
samba3.raw.lock(nt4_dc) -> 32
ERROR: test failed with exit code 1