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-144/2018-06-07-1229/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-144/2018-06-07-1229/samba-nt4.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2018-06-07-1229/samba-nt4.stdout
  
The top commit at the time of the failure was:

commit 0fb122af5094d568c56b0a7814696f3389813bbd
Author: Joe Guo <joeg at catalyst.net.nz>
Date:   Wed Jun 6 15:01:28 2018 +1200

    tests/demote: replace demote test bash script to python
    
    Convert bash script to python and add demote and dns remove test on top.
    
    Signed-off-by: Joe Guo <joeg at catalyst.net.nz>
    Reviewed-by: Douglas Bagnall <douglas.bagnall at catalyst.net.nz>
    Reviewed-by: Garming Sam <garming at catalyst.net.nz>
    
    Autobuild-User(master): Douglas Bagnall <dbagnall at samba.org>
    Autobuild-Date(master): Thu Jun  7 04:21:17 CEST 2018 on sn-devel-144

and the last 50 lines of the stdout log were:

[179(1004)/502 at 9m57s] samba3.raw.sfileinfo.bug(nt4_dc)
[180(1004)/502 at 9m57s] samba3.raw.streams(nt4_dc)
[181(1017)/502 at 10m0s] samba3.raw.unlink(nt4_dc)
[182(1020)/502 at 10m1s] samba3.raw.write(nt4_dc)
[183(1024)/502 at 10m1s] samba3.raw.samba3hide(nt4_dc)
[184(1025)/502 at 10m1s] samba3.raw.samba3badpath(nt4_dc)
[185(1026)/502 at 10m2s] samba3.raw.sfileinfo.rename(nt4_dc)
[186(1027)/502 at 10m2s] samba3.raw.session plain(nt4_dc)
[187(1029)/502 at 10m2s] samba3.raw.session enc(nt4_dc)
[188(1031)/502 at 10m3s] samba3.raw.samba3caseinsensitive(nt4_dc)
[189(1032)/502 at 10m3s] samba3.raw.samba3posixtimedlock(nt4_dc)
[190(1033)/502 at 10m8s] samba3.raw.samba3rootdirfid(nt4_dc)
[191(1034)/502 at 10m8s] samba3.raw.sfileinfo.end-of-file(nt4_dc)
[192(1035)/502 at 10m9s] samba3.raw.samba3checkfsp(nt4_dc)
[193(1036)/502 at 10m9s] samba3.raw.samba3closeerr(nt4_dc)
[194(1037)/502 at 10m9s] samba3.raw.samba3oplocklogoff(nt4_dc)
[195(1038)/502 at 10m9s] samba3.raw.samba3badnameblob(nt4_dc)
[196(1039)/502 at 10m9s] samba3.smb2.getinfo(nt4_dc)
[197(1045)/502 at 10m10s] samba3.smb2.lock aio(nt4_dc)
[198(1066)/502 at 10m12s] samba3.smb2.lock(nt4_dc)
[199(1087)/502 at 10m14s] samba3.smb2.read(nt4_dc)
[200(1091)/502 at 10m14s] samba3.smb2.create(nt4_dc)
[201(1104)/502 at 10m15s] samba3.smb2.acls(nt4_dc)
[202(1112)/502 at 10m17s] samba3.smb2.notify(nt4_dc)
TESTING CHANGE NOTIFY ON DIRECTORIES
Testing notify cancel
Testing notify mkdir
Testing notify rmdir
Testing notify mkdir - rmdir - mkdir - rmdir
Testing buffered notify on create of 10 files
Testing notify on unlink for the first file
UNEXPECTED(failure): samba3.smb2.notify.dir(nt4_dc)
REASON: Exception: Exception: (../source4/torture/smb2/notify.c:394) wrong value for notify.smb2.out.num_changes  0x9 should be 0xa

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) -> 99
samba3.raw.oplock(nt4_dc) -> 43
samba3.raw.search(nt4_dc) -> 37
samba3.blackbox.net.rpc.conf(nt4_dc) -> 35
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) -> 25
samba3.base.lock(nt4_dc) -> 21
samba3.smbtorture_s3.crypt_client(nt4_dc).LOCK1(nt4_dc) -> 17
samba3.base.defer_open(nt4_dc) -> 17
ERROR: test failed with exit code 1