autobuild[sn-devel-184]: intermittent test failure detected

[autobuild]

The autobuild test system (on sn-devel-184) 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-184/2019-03-17-0318/flakey.log

The failure seems to be in the "ctdb" suite, whose build logs are available here:

   https://git.samba.org/autobuild.flakey.sn-devel-184/2019-03-17-0318/ctdb.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-184/2019-03-17-0318/ctdb.stdout
  
The top commit at the time of the failure was:

commit 1375e08580d642c069170e3e3bddc690bf3c5e89
Author: David Disseldorp <ddiss at samba.org>
Date:   Tue Mar 12 18:49:09 2019 +0100

    smbd: fix check_parent_access() talloc stackframe leaks
    
    check_parent_access() currently leaks a number of allocations onto the
    talloc_tos() context in both success and error paths.
    
    Signed-off-by: David Disseldorp <ddiss at samba.org>
    Reviewed-by: Volker Lendecke <vl at samba.org>
    
    Autobuild-User(master): David Disseldorp <ddiss at samba.org>
    Autobuild-Date(master): Fri Mar 15 11:32:04 UTC 2019 on sn-devel-144

and the last 50 lines of the stdout log were:

--------------------------------------------------
Required output (Exit status: 0):
--------------------------------------------------
11.foo: hello
Event monitor completed with result=-110
11.foo result=0
22.bar result=-110

FAILED
==========================================================================
TEST FAILED: tests/cunit/run_event_001.sh (status 1) (duration: 5s)
==========================================================================

 PASSED  tests/cunit/cmdline_test_001.sh
 PASSED  tests/cunit/comm_test_001.sh
 PASSED  tests/cunit/comm_test_002.sh
 PASSED  tests/cunit/conf_test_001.sh
 PASSED  tests/cunit/config_test_001.sh
 PASSED  tests/cunit/config_test_002.sh
 PASSED  tests/cunit/config_test_003.sh
 PASSED  tests/cunit/config_test_004.sh
 PASSED  tests/cunit/config_test_005.sh
 PASSED  tests/cunit/config_test_006.sh
 PASSED  tests/cunit/config_test_007.sh
 PASSED  tests/cunit/ctdb_io_test_001.sh
 PASSED  tests/cunit/db_hash_test_001.sh
 PASSED  tests/cunit/event_protocol_test_001.sh
 PASSED  tests/cunit/event_script_test_001.sh
 PASSED  tests/cunit/hash_count_test_001.sh
 PASSED  tests/cunit/line_test_001.sh
 PASSED  tests/cunit/path_tests_001.sh
 PASSED  tests/cunit/pidfile_test_001.sh
 PASSED  tests/cunit/pkt_read_001.sh
 PASSED  tests/cunit/pkt_write_001.sh
 PASSED  tests/cunit/porting_tests_001.sh
 PASSED  tests/cunit/protocol_test_001.sh
 PASSED  tests/cunit/protocol_test_002.sh
 PASSED  tests/cunit/protocol_test_012.sh
 PASSED  tests/cunit/protocol_test_101.sh
 PASSED  tests/cunit/protocol_test_111.sh
 PASSED  tests/cunit/protocol_test_201.sh
 PASSED  tests/cunit/rb_test_001.sh
 PASSED  tests/cunit/reqid_test_001.sh
*FAILED* tests/cunit/run_event_001.sh

30/31 tests passed

Removing TEST_VAR_DIR=tests/var
autotest exited with exit status 1
Makefile:22: recipe for target 'autotest' failed