innodb.temporary_table_optimization fails in buildbot on kvm-rpm-rhel8-ppc64le with wrong result

innodb.temporary_table_optimization 'innodb' w4 [ fail ]

        Test ended at 2019-09-07 12:42:16

CURRENT_TEST: innodb.temporary_table_optimization

--- /usr/share/mysql-test/suite/innodb/r/temporary_table_optimization.result	2019-09-07 09:08:24.000000000 +0000

+++ /dev/shm/var/4/log/temporary_table_optimization.reject	2019-09-07 12:42:15.958074599 +0000

@@ -128,11 +128,9 @@

 alter table t1 add index sec_index(t1_f);

 explain select * from t1 where t1_f > 2.2;

 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

-1	SIMPLE	t1	ALL	sec_index	NULL	NULL	NULL	4	Using where

+1	SIMPLE	t1	range	sec_index	sec_index	5	NULL	1	Using index condition

 select * from t1 where t1_f > 2.2;

 t1_i	t1_f

-2	2.2

-3	2.2

 4	4.4

 alter table t1 add column (t1_c char(10));

 select * from t1;

mysqltest: Result length mismatch