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-184/2019-04-27-0335/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-184/2019-04-27-0335/ctdb.stderr
   https://git.samba.org/autobuild.flakey.sn-devel-184/2019-04-27-0335/ctdb.stdout
  
The top commit at the time of the failure was:

commit 633698c971598090b6883d39d370ba202514ef32
Author: Günther Deschner <gd at samba.org>
Date:   Thu Apr 25 14:49:48 2019 +0200

    Revert "lib/replace: define NAME_MAX for platforms that don't have it"
    
    BUG: https://bugzilla.samba.org/show_bug.cgi?id=13872
    
    This reverts commit e3c894fb6b87df8aa56e29ef3b16ae1ef456a875.
    
    Signed-off-by: Günther Deschner <gd at samba.org>
    Reviewed-by: Ralph Boehme <slow at samba.org>
    
    Autobuild-User(master): Günther Deschner <gd at samba.org>
    Autobuild-Date(master): Fri Apr 26 13:03:05 UTC 2019 on sn-devel-184

and the last 50 lines of the stdout log were:

 PASSED  tests/tool/ctdb.setdbsticky.003.sh
 PASSED  tests/tool/ctdb.setdbsticky.004.sh
 PASSED  tests/tool/ctdb.setdbsticky.005.sh
 PASSED  tests/tool/ctdb.setdebug.001.sh
 PASSED  tests/tool/ctdb.setdebug.002.sh
 PASSED  tests/tool/ctdb.setdebug.003.sh
 PASSED  tests/tool/ctdb.setifacelink.001.sh
 PASSED  tests/tool/ctdb.setifacelink.002.sh
 PASSED  tests/tool/ctdb.setvar.001.sh
 PASSED  tests/tool/ctdb.setvar.002.sh
 PASSED  tests/tool/ctdb.status.001.sh
 PASSED  tests/tool/ctdb.status.002.sh
 PASSED  tests/tool/ctdb.stop.001.sh
 PASSED  tests/tool/ctdb.stop.002.sh
 PASSED  tests/tool/ctdb.stop.003.sh
 PASSED  tests/tool/ctdb.unban.001.sh
 PASSED  tests/tool/ctdb.unban.002.sh
 PASSED  tests/tool/ctdb.unban.003.sh
 PASSED  tests/tool/ctdb.uptime.001.sh
 PASSED  tests/tool/ctdb.writekey.001.sh
 PASSED  tests/simple/00_ctdb_onnode.sh
 PASSED  tests/simple/01_ctdb_reclock_command.sh
 PASSED  tests/simple/02_ctdb_tunables.sh
 PASSED  tests/simple/05_ctdb_listnodes.sh
 PASSED  tests/simple/06_ctdb_getpid.sh
 PASSED  tests/simple/07_ctdb_process_exists.sh
 PASSED  tests/simple/08_ctdb_isnotrecmaster.sh
 PASSED  tests/simple/09_ctdb_ping.sh
 PASSED  tests/simple/11_ctdb_ip.sh
 PASSED  tests/simple/12_ctdb_getdebug.sh
 PASSED  tests/simple/13_ctdb_setdebug.sh
 PASSED  tests/simple/14_ctdb_statistics.sh
 PASSED  tests/simple/15_ctdb_statisticsreset.sh
 PASSED  tests/simple/16_ctdb_config_add_ip.sh
 PASSED  tests/simple/17_ctdb_config_delete_ip.sh
 PASSED  tests/simple/18_ctdb_reloadips.sh
 PASSED  tests/simple/19_ip_takeover_noop.sh
 PASSED  tests/simple/20_delip_iface_gc.sh
 PASSED  tests/simple/21_ctdb_attach.sh
 PASSED  tests/simple/23_ctdb_moveip.sh
 PASSED  tests/simple/24_ctdb_getdbmap.sh
 PASSED  tests/simple/25_dumpmemory.sh
 PASSED  tests/simple/26_ctdb_config_check_error_on_unreachable_ctdb.sh
*FAILED* tests/simple/27_ctdb_detach.sh

504/505 tests passed

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