vcol.vcol_keys_myisam fails in buildbot and outside

vcol.vcol_keys_myisam                    w3 [ fail ]

        Test ended at 2017-01-18 15:36:04

CURRENT_TEST: vcol.vcol_keys_myisam

myisamchk: error: 138 when opening MyISAM-table '/usr/local/mariadb-10.2.4-linux-x86_64/mysql-test/var/3/mysqld.1/data//test/t1'

myisamchk: error: 138 when opening MyISAM-table '/usr/local/mariadb-10.2.4-linux-x86_64/mysql-test/var/3/mysqld.1/data//test/t1'

--- /usr/local/mariadb-10.2.4-linux-x86_64/mysql-test/suite/vcol/r/vcol_keys_myisam.result	2017-01-18 14:36:57.000000000 +0100

+++ /usr/local/mariadb-10.2.4-linux-x86_64/mysql-test/suite/vcol/r/vcol_keys_myisam.reject	2017-01-18 15:36:04.000000000 +0100

@@ -178,11 +178,13 @@

 DELETE FROM t1 WHERE f5 = 1 OR v4 = 4 ORDER BY f5,v4 LIMIT 9;

 SELECT * from t1;

 f2	f3	f4	f5	v4

+5	4	1	0	4

 5	7	NULL	0	5

 5	4	0	4	5

 5	7	0	7	5

 5	0	0	4	5

 5	0	0	7	5

+5	4	4	4	4

 5	7	7	7	7

 5	1	1	0	1

 DROP TABLE t1;

mysqltest: Result length mismatch