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-144/2019-01-17-1317/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-144/2019-01-17-1317/samba-nt4.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-144/2019-01-17-1317/samba-nt4.stdout
  
The top commit at the time of the failure was:

commit a67b711ebcc8c88f37a09e8bbdbc97e412d76911
Author: Tim Beale <timbeale at catalyst.net.nz>
Date:   Wed Jan 16 13:34:29 2019 +1300

    tests: Switchover auth_log from s4 SMB client bindings to s4
    
    The main changes required are:
    - we need to use an s3 loadparm instead of the standard s4 lp.
    - the s3 SMB bindings don't support the use_spnego/ntlmv2_auth params,
      however, we can set these in the loadparm instead, which will get the
      SMB client code to do what we want. Instead of passing in boolean
      parameters, we need to use yes/no strings that the lp will accept.
      (We always set these values because the underlying lp context is
      actually global, and setting a value is 'sticky' and will persist
      across test cases. These conf settings are only used by the SMB client
      code, and so will only affect the SMB test cases).
    - For the no_spnego_no_ntlmv2 test cases, we now explicitly force it to
      an SMBv1 connection. The s4 bindings only ever supported SMBv1
      connections, so this is the same behaviour. The other test cases will
      now try to negotiate SMBv2 connections, however, the no_ntlmv2 test
      cases are explicitly checking for bare-NTLM (with the s3 bindings, it
      now ends up as NTLMSSP by default).
    
    Signed-off-by: Tim Beale <timbeale at catalyst.net.nz>
    Reviewed-by: Jeremy Allison <jra at samba.org>
    
    Autobuild-User(master): Jeremy Allison <jra at samba.org>
    Autobuild-Date(master): Thu Jan 17 04:47:56 CET 2019 on sn-devel-144

and the last 50 lines of the stdout log were:

[152(837)/578 at 12m45s] samba3.base.rw1(nt4_dc)
[153(838)/578 at 12m45s] samba3.base.rw1(nt4_dc)
[154(839)/578 at 12m46s] samba3.base.secleak(nt4_dc)
[155(840)/578 at 12m46s] samba3.base.tcon(nt4_dc)
[156(841)/578 at 12m46s] samba3.base.tcondev(nt4_dc)
[157(842)/578 at 12m46s] samba3.base.trans2(nt4_dc)
[158(843)/578 at 12m50s] samba3.base.unlink(nt4_dc)
[159(844)/578 at 12m50s] samba3.base.vuid(nt4_dc)
[160(845)/578 at 12m51s] samba3.base.xcopy(nt4_dc)
[161(846)/578 at 12m51s] samba3.base.samba3error(nt4_dc)
[162(847)/578 at 12m51s] samba3.raw.acls(nt4_dc)
[163(859)/578 at 12m54s] samba3.raw.acls nfs4acl_xattr-simple-40(nt4_dc)
[164(871)/578 at 12m57s] samba3.raw.acls nfs4acl_xattr-special-40(nt4_dc)
[165(883)/578 at 13m0s] samba3.raw.acls nfs4acl_xattr-simple-41(nt4_dc)
[166(895)/578 at 13m2s] samba3.raw.acls nfs4acl_xattr-xdr-40(nt4_dc)
[167(907)/578 at 13m5s] samba3.raw.acls nfs4acl_xattr-xdr-41(nt4_dc)
[168(919)/578 at 13m8s] samba3.raw.chkpath(nt4_dc)
[169(920)/578 at 13m8s] samba3.raw.close(nt4_dc)
[170(921)/578 at 13m9s] samba3.raw.composite(nt4_dc)
[171(925)/578 at 13m11s] samba3.raw.eas(nt4_dc)
[172(926)/578 at 13m11s] samba3.raw.lock(nt4_dc)
[173(939)/578 at 13m45s] samba3.raw.mkdir(nt4_dc)
[174(940)/578 at 13m45s] samba3.raw.mux(nt4_dc)
[175(941)/578 at 13m48s] 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) -> 83
samba3.blackbox.net.local.conf(nt4_dc:local) -> 56
samba3.base.dir2(nt4_dc) -> 53
samba3.raw.lock(nt4_dc) -> 34
samba3.smbtorture_s3.crypt_client.OPLOCK1(nt4_dc) -> 31
samba3.blackbox.smbclient_s3.SMB3.plain (nt4_member) member creds(nt4_member) -> 23
samba3.blackbox.smbclient_s3.SMB3.crypt (nt4_dc)(nt4_dc) -> 23
samba3.blackbox.smbclient_s3.NT1.crypt (nt4_dc)(nt4_dc) -> 22
samba3.blackbox.smbclient_s3.SMB3.sign (nt4_dc)(nt4_dc) -> 22
samba3.blackbox.smbclient_s3.NT1.plain (nt4_member) member creds(nt4_member) -> 22
ERROR: test failed with exit code 1