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-144/2019-02-24-0042/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-144/2019-02-24-0042/samba-nt4.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2019-02-24-0042/samba-nt4.stdout
  
The top commit at the time of the failure was:

commit 9b9565c3e69b92c298c7168e516387bb249c9e36
Author: Ralph Boehme <slow at samba.org>
Date:   Thu Feb 21 16:55:09 2019 +0100

    winbindd: set idmap cache entries as the last step in async wb_xids2sids
    
    Bug: https://bugzilla.samba.org/show_bug.cgi?id=13802
    
    Signed-off-by: Ralph Boehme <slow at samba.org>
    Reviewed-by: Volker Lendecke <vl at samba.org>
    
    Autobuild-User(master): Volker Lendecke <vl at samba.org>
    Autobuild-Date(master): Sat Feb 23 09:23:22 CET 2019 on sn-devel-144

and the last 50 lines of the stdout log were:

[152(837)/578 at 8m21s] samba3.base.rw1(nt4_dc)
[153(838)/578 at 8m22s] samba3.base.rw1(nt4_dc)
[154(839)/578 at 8m22s] samba3.base.secleak(nt4_dc)
[155(840)/578 at 8m23s] samba3.base.tcon(nt4_dc)
[156(841)/578 at 8m24s] samba3.base.tcondev(nt4_dc)
[157(842)/578 at 8m24s] samba3.base.trans2(nt4_dc)
[158(843)/578 at 8m27s] samba3.base.unlink(nt4_dc)
[159(844)/578 at 8m28s] samba3.base.vuid(nt4_dc)
[160(845)/578 at 8m28s] samba3.base.xcopy(nt4_dc)
[161(846)/578 at 8m28s] samba3.base.samba3error(nt4_dc)
[162(847)/578 at 8m28s] samba3.raw.acls(nt4_dc)
[163(859)/578 at 8m31s] samba3.raw.acls nfs4acl_xattr-simple-40(nt4_dc)
[164(871)/578 at 8m34s] samba3.raw.acls nfs4acl_xattr-special-40(nt4_dc)
[165(883)/578 at 8m36s] samba3.raw.acls nfs4acl_xattr-simple-41(nt4_dc)
[166(895)/578 at 8m38s] samba3.raw.acls nfs4acl_xattr-xdr-40(nt4_dc)
[167(907)/578 at 8m41s] samba3.raw.acls nfs4acl_xattr-xdr-41(nt4_dc)
[168(919)/578 at 8m43s] samba3.raw.chkpath(nt4_dc)
[169(920)/578 at 8m44s] samba3.raw.close(nt4_dc)
[170(921)/578 at 8m44s] samba3.raw.composite(nt4_dc)
[171(925)/578 at 8m46s] samba3.raw.eas(nt4_dc)
[172(926)/578 at 8m47s] samba3.raw.lock(nt4_dc)
[173(939)/578 at 9m20s] samba3.raw.mkdir(nt4_dc)
[174(940)/578 at 9m20s] samba3.raw.mux(nt4_dc)
[175(941)/578 at 9m23s] samba3.raw.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.raw.notify.dir(nt4_dc)
REASON: Exception: Exception: ../../source4/torture/raw/notify.c:223: notify.nttrans.out.num_changes was 9 (0x9), expected 10 (0xA): wrong number of changes

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) -> 51
samba3.base.dir2(nt4_dc) -> 42
samba3.blackbox.net.local.conf(nt4_dc:local) -> 33
samba3.raw.lock(nt4_dc) -> 33
samba3.smbtorture_s3.crypt_client.OPLOCK1(nt4_dc) -> 30
samba3.base.lock(nt4_dc) -> 19
samba3.base.defer_open(nt4_dc) -> 17
samba3.smbtorture_s3.crypt_client.LOCK1(nt4_dc) -> 13
samba3.blackbox.net.rpc.registry(nt4_dc) -> 12
samba3.smbtorture_s3.crypt_client.IOCTL(nt4_dc) -> 12
ERROR: test failed with exit code 1