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-144/2019-04-02-1337/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-144/2019-04-02-1337/samba-nt4.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2019-04-02-1337/samba-nt4.stdout
  
The top commit at the time of the failure was:

commit 92c726dc7a83834ee0e49d83e676b02f7687f5cd
Author: Kristján Valur <kristjan at rvx.is>
Date:   Tue Mar 12 09:33:15 2019 +0000

    make some auth functions return an NTSTATUS like other similar functions for better diagnostics.
    
    Signed-off-by: Kristján Valur <kristjan at rvx.is>
    Reviewed-by: Andreas Schneider <asn at samba.org>
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>
    
    Autobuild-User(master): Andrew Bartlett <abartlet at samba.org>
    Autobuild-Date(master): Tue Apr  2 02:12:48 UTC 2019 on sn-devel-144

and the last 50 lines of the stdout log were:

[191(1087)/588 at 18m56s] samba3.raw.search(nt4_dc)
[192(1095)/588 at 20m6s] samba3.raw.seek(nt4_dc)
[193(1096)/588 at 20m6s] samba3.raw.sfileinfo.bug(nt4_dc)
[194(1096)/588 at 20m6s] samba3.raw.streams(nt4_dc)
[195(1109)/588 at 20m11s] samba3.raw.unlink(nt4_dc)
[196(1112)/588 at 20m12s] samba3.raw.write(nt4_dc)
[197(1116)/588 at 20m13s] samba3.raw.samba3hide(nt4_dc)
[198(1117)/588 at 20m13s] samba3.raw.samba3badpath(nt4_dc)
[199(1118)/588 at 20m13s] samba3.raw.sfileinfo.rename(nt4_dc)
[200(1119)/588 at 20m14s] samba3.raw.session plain(nt4_dc)
[201(1121)/588 at 20m14s] samba3.raw.session enc(nt4_dc)
[202(1123)/588 at 20m15s] samba3.raw.samba3caseinsensitive(nt4_dc)
[203(1124)/588 at 20m15s] samba3.raw.samba3posixtimedlock(nt4_dc)
[204(1125)/588 at 20m21s] samba3.raw.samba3rootdirfid(nt4_dc)
[205(1126)/588 at 20m21s] samba3.raw.sfileinfo.end-of-file(nt4_dc)
[206(1127)/588 at 20m22s] samba3.raw.samba3checkfsp(nt4_dc)
[207(1128)/588 at 20m22s] samba3.raw.samba3closeerr(nt4_dc)
[208(1129)/588 at 20m23s] samba3.raw.samba3oplocklogoff(nt4_dc)
[209(1130)/588 at 20m23s] samba3.raw.samba3badnameblob(nt4_dc)
[210(1131)/588 at 20m23s] samba3.smb2.getinfo(nt4_dc)
[211(1137)/588 at 20m24s] samba3.smb2.lock aio(nt4_dc)
[212(1158)/588 at 20m28s] samba3.smb2.lock(nt4_dc)
[213(1179)/588 at 20m32s] samba3.smb2.read(nt4_dc)
[214(1183)/588 at 20m33s] samba3.smb2.aio_delay(nt4_dc)
[215(1184)/588 at 20m37s] samba3.smb2.create(nt4_dc)
[216(1197)/588 at 20m39s] samba3.smb2.twrp(nt4_dc)
[217(1197)/588 at 20m39s] samba3.smb2.acls(nt4_dc)
[218(1210)/588 at 20m43s] samba3.smb2.notify(nt4_dc)
smbtorture 4.11.0pre1-DEVELOPERBUILD
Using seed 1554204916
TESTING VALIDITY OF CHANGE NOTIFY REQUEST
UNEXPECTED(failure): samba3.smb2.notify.valid-req(nt4_dc)
REASON: Exception: Exception: (../../source4/torture/smb2/notify.c:163) wrong value for n.out.num_changes  0x2 should be 0x3

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) -> 107
samba3.blackbox.net.rpc.conf(nt4_dc) -> 100
samba3.raw.search(nt4_dc) -> 69
samba3.base.dir2(nt4_dc) -> 65
samba3.blackbox.net.local.conf(nt4_dc:local) -> 65
samba3.raw.oplock(nt4_dc) -> 47
samba3.raw.lock(nt4_dc) -> 33
samba3.smbtorture_s3.crypt_client.OPLOCK1(nt4_dc) -> 31
samba3.base.lock(nt4_dc) -> 27
samba3.blackbox.smbclient_s3.SMB3.crypt (nt4_dc)(nt4_dc) -> 25
ERROR: test failed with exit code 1