main.index_merge_innodb fails sporadically in buildbot with wrong result or timeout

main.index_merge_innodb 'xtradb'         w1 [ fail ]

        Test ended at 2014-11-19 12:27:44

CURRENT_TEST: main.index_merge_innodb

--- /home/buildbot/maria-slave/power8-vlp03-bintar/build/mysql-test/r/index_merge_innodb.result	2014-11-19 10:43:11.911410000 -0500

+++ /home/buildbot/maria-slave/power8-vlp03-bintar/build/mysql-test/r/index_merge_innodb.reject	2014-11-19 12:27:43.950083391 -0500

@@ -313,7 +313,7 @@

 update t1 set key2=key1,key3=key1;

 explain select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);

 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

-1	SIMPLE	t1	index_merge	i2,i3	i3,i2	4,4	NULL	REF	Using sort_union(i3,i2); Using where

+1	SIMPLE	t1	ALL	i2,i3	NULL	NULL	NULL	REF	Using where

 select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);

 key1	key2	key3

 31	31	31