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-184/2019-03-13-0957/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-184/2019-03-13-0957/samba-nt4.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-184/2019-03-13-0957/samba-nt4.stdout
  
The top commit at the time of the failure was:

commit a68e8af2d1b92ba9a94fc7cc1eb98cdca687d5fd
Author: Tim Beale <timbeale at catalyst.net.nz>
Date:   Mon Mar 11 16:03:34 2019 +1300

    testsuite: Remove build_farm testsuites
    
    This test code is not run (and has not been run for about a decade).
    Let's remove it - it's there in the git history if we ever want to try
    to repurpose it again.
    
    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): Tue Mar 12 02:56:05 UTC 2019 on sn-devel-144

and the last 50 lines of the stdout log were:

[155(855)/586 at 9m49s] samba3.base.openattr(nt4_dc)
[156(856)/586 at 9m50s] samba3.base.properties(nt4_dc)
[157(857)/586 at 9m50s] samba3.base.rename(nt4_dc)
[158(858)/586 at 9m51s] samba3.base.rw1(nt4_dc)
[159(859)/586 at 9m51s] samba3.base.rw1(nt4_dc)
[160(860)/586 at 9m52s] samba3.base.rw1(nt4_dc)
[161(861)/586 at 9m53s] samba3.base.secleak(nt4_dc)
[162(862)/586 at 9m54s] samba3.base.tcon(nt4_dc)
[163(863)/586 at 9m54s] samba3.base.tcondev(nt4_dc)
[164(864)/586 at 9m55s] samba3.base.trans2(nt4_dc)
[165(865)/586 at 9m58s] samba3.base.unlink(nt4_dc)
[166(866)/586 at 9m59s] samba3.base.vuid(nt4_dc)
[167(867)/586 at 9m59s] samba3.base.xcopy(nt4_dc)
[168(868)/586 at 9m59s] samba3.base.samba3error(nt4_dc)
[169(869)/586 at 10m0s] samba3.raw.acls(nt4_dc)
[170(881)/586 at 10m3s] samba3.raw.acls nfs4acl_xattr-simple-40(nt4_dc)
[171(893)/586 at 10m7s] samba3.raw.acls nfs4acl_xattr-special-40(nt4_dc)
[172(905)/586 at 10m10s] samba3.raw.acls nfs4acl_xattr-simple-41(nt4_dc)
[173(917)/586 at 10m13s] samba3.raw.acls nfs4acl_xattr-xdr-40(nt4_dc)
[174(929)/586 at 10m15s] samba3.raw.acls nfs4acl_xattr-xdr-41(nt4_dc)
[175(941)/586 at 10m18s] samba3.raw.chkpath(nt4_dc)
[176(942)/586 at 10m19s] samba3.raw.close(nt4_dc)
[177(943)/586 at 10m20s] samba3.raw.composite(nt4_dc)
[178(947)/586 at 10m22s] samba3.raw.eas(nt4_dc)
[179(948)/586 at 10m22s] samba3.raw.lock(nt4_dc)
[180(961)/586 at 10m56s] samba3.raw.mkdir(nt4_dc)
[181(962)/586 at 10m57s] samba3.raw.mux(nt4_dc)
[182(963)/586 at 10m59s] samba3.raw.notify(nt4_dc)
TESTING CHANGE NOTIFY COMPLETION FILTERS
Testing mkdir
UNEXPECTED(failure): samba3.raw.notify.mask(nt4_dc)
REASON: Exception: Exception: ../../source4/torture/raw/notify.c:835: notify.nttrans.out.changes[0].action was 2 (0x2), expected 1 (0x1): nchanges=1 action=2 expectedAction=1 filter=0x00000004

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.blackbox.net.rpc.conf(nt4_dc) -> 60
samba3.base.dir2(nt4_dc) -> 53
samba3.blackbox.net.local.conf(nt4_dc:local) -> 41
samba3.raw.lock(nt4_dc) -> 34
samba3.smbtorture_s3.crypt_client.OPLOCK1(nt4_dc) -> 31
samba3.base.lock(nt4_dc) -> 22
samba3.base.defer_open(nt4_dc) -> 17
samba3.blackbox.smbclient_s3.NT1.crypt (nt4_dc)(nt4_dc) -> 13
samba3.blackbox.smbclient_s3.SMB3.sign (nt4_member) member creds(nt4_member) -> 13
samba3.smbtorture_s3.crypt_client.IOCTL(nt4_dc) -> 13
ERROR: test failed with exit code 1
Makefile:16: recipe for target 'test' failed