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-144/2018-09-09-0629/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-144/2018-09-09-0629/samba-nt4.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-09-09-0629/samba-nt4.stdout
  
The top commit at the time of the failure was:

commit 8c00c017cb5dc930b229a6fff8e541322a63494e
Author: Jeremy Allison <jra at samba.org>
Date:   Fri Sep 7 15:14:37 2018 -0700

    s4: torture: Ensure raw notify tests use different directories.
    
    Should help track down flapping tests.
    
    Signed-off-by: Jeremy Allison <jra at samba.org>
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>
    
    Autobuild-User(master): Andrew Bartlett <abartlet at samba.org>
    Autobuild-Date(master): Sat Sep  8 11:37:44 CEST 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

[144(829)/571 at 6m31s] samba3.base.ntdeny2(nt4_dc)
[145(830)/571 at 6m33s] samba3.base.open(nt4_dc)
[146(831)/571 at 6m33s] samba3.base.openattr(nt4_dc)
[147(832)/571 at 6m34s] samba3.base.properties(nt4_dc)
[148(833)/571 at 6m34s] samba3.base.rename(nt4_dc)
[149(834)/571 at 6m34s] samba3.base.rw1(nt4_dc)
[150(835)/571 at 6m34s] samba3.base.rw1(nt4_dc)
[151(836)/571 at 6m35s] samba3.base.rw1(nt4_dc)
[152(837)/571 at 6m35s] samba3.base.secleak(nt4_dc)
[153(838)/571 at 6m36s] samba3.base.tcon(nt4_dc)
[154(839)/571 at 6m36s] samba3.base.tcondev(nt4_dc)
[155(840)/571 at 6m36s] samba3.base.trans2(nt4_dc)
[156(841)/571 at 6m39s] samba3.base.unlink(nt4_dc)
[157(842)/571 at 6m40s] samba3.base.vuid(nt4_dc)
[158(843)/571 at 6m40s] samba3.base.xcopy(nt4_dc)
[159(844)/571 at 6m40s] samba3.base.samba3error(nt4_dc)
[160(845)/571 at 6m40s] samba3.raw.acls(nt4_dc)
[161(857)/571 at 6m42s] samba3.raw.acls nfs4acl_xattr-simple-40(nt4_dc)
[162(869)/571 at 6m45s] samba3.raw.acls nfs4acl_xattr-special-40(nt4_dc)
[163(881)/571 at 6m47s] samba3.raw.acls nfs4acl_xattr-simple-41(nt4_dc)
[164(893)/571 at 6m49s] samba3.raw.acls nfs4acl_xattr-xdr-40(nt4_dc)
[165(905)/571 at 6m51s] samba3.raw.acls nfs4acl_xattr-xdr-41(nt4_dc)
[166(917)/571 at 6m52s] samba3.raw.chkpath(nt4_dc)
[167(918)/571 at 6m53s] samba3.raw.close(nt4_dc)
[168(919)/571 at 6m53s] samba3.raw.composite(nt4_dc)
[169(923)/571 at 6m55s] samba3.raw.eas(nt4_dc)
[170(924)/571 at 6m55s] samba3.raw.lock(nt4_dc)
[171(937)/571 at 7m28s] samba3.raw.mkdir(nt4_dc)
[172(938)/571 at 7m28s] samba3.raw.mux(nt4_dc)
[173(939)/571 at 7m31s] samba3.raw.notify(nt4_dc)
TESTING CHANGE NOTIFY REPLY ALIGNMENT
UNEXPECTED(failure): samba3.raw.notify.alignment(nt4_dc)
REASON: Exception: Exception: ../source4/torture/raw/notify.c:2089: Expression `notify.nttrans.out.num_changes == num_names' 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.blackbox.net.rpc.conf(nt4_dc) -> 42
samba3.base.dir2(nt4_dc) -> 33
samba3.raw.lock(nt4_dc) -> 33
samba3.smbtorture_s3.crypt_client(nt4_dc).OPLOCK1(nt4_dc) -> 30
samba3.blackbox.net.local.conf(nt4_dc:local) -> 27
samba3.base.defer_open(nt4_dc) -> 17
samba3.base.lock(nt4_dc) -> 16
samba3.smbtorture_s3.crypt_client(nt4_dc).OPLOCK2(nt4_dc) -> 10
samba3.blackbox.net.rpc.registry(nt4_dc) -> 9
samba3.smbtorture_s3.crypt_client(nt4_dc).IOCTL(nt4_dc) -> 9
ERROR: test failed with exit code 1