main.show_explain failed in buildbot

main.show_explain 'xtradb'               w1 [ fail ]

        Test ended at 2016-05-08 15:26:44

CURRENT_TEST: main.show_explain

mysqltest: At line 880: query 'reap' succeeded - should have failed with errno 1317...

The result from queries just before the failure was:

< snip >

11	data1

12	data1

13	data1

14	data1

15	data1

16	data1

17	data1

18	data1

19	data1

20	data1

set autocommit=0;

select * from t1 where pk between 10 and 20 for update;

# do: send_eval show explain for thr2;

Timeout in wait_condition.inc for select State='show explain' from information_schema.processlist where id=33

Id	User	Host	db	Command	Time	State	Info	Progress

33	root	localhost	test	Sleep	30		NULL	0.000

34	root	localhost	test	Query	30	Sending data	select * from t1 where pk between 10 and 20 for update	0.000

38	root	localhost	test	Sleep	30		NULL	0.000

39	root	localhost	test	Query	0	init	show full processlist	0.000

kill query $thr_default;