plugins.server_audit fails sporadically in buildbot

plugins.server_audit                     w3 [ fail ]

        Test ended at 2015-05-21 16:40:39

CURRENT_TEST: plugins.server_audit

--- /usr/local/mariadb-10.1.5-linux-i686/mysql-test/suite/plugins/r/server_audit.result	2015-05-21 14:36:03.000000000 +0200

+++ /usr/local/mariadb-10.1.5-linux-i686/mysql-test/suite/plugins/r/server_audit.reject	2015-05-21 16:40:39.000000000 +0200

@@ -182,9 +182,9 @@

 uninstall plugin server_audit;

 Warnings:

 Warning	1620	Plugin is busy and will be uninstalled on shutdown

-TIME,HOSTNAME,root,localhost,ID,ID,QUERY,test,'set global server_audit_logging=on',0

 TIME,HOSTNAME,root,localhost,ID,0,CONNECT,mysql,,0

 TIME,HOSTNAME,root,localhost,ID,0,DISCONNECT,mysql,,0

+TIME,HOSTNAME,root,localhost,ID,ID,QUERY,test,'set global server_audit_logging=on',0

 TIME,HOSTNAME,no_such_user,localhost,ID,0,FAILED_CONNECT,,,ID

 TIME,HOSTNAME,no_such_user,localhost,ID,0,DISCONNECT,,,0

 TIME,HOSTNAME,root,localhost,ID,ID,QUERY,test,'set global server_audit_incl_users=\'odin, root, dva, tri\'',0

mysqltest: Result content mismatch