roles.create_and_grant_role failed in buildbot

roles.create_and_grant_role              w1 [ fail ]

        Test ended at 2016-11-25 16:21:12

CURRENT_TEST: roles.create_and_grant_role

--- /usr/share/mysql/mysql-test/suite/roles/create_and_grant_role.result	2016-11-25 07:08:27.000000000 -0500

+++ /dev/shm/var/1/log/create_and_grant_role.reject	2016-11-25 16:21:12.392132977 -0500

@@ -16,6 +16,7 @@

 GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION

 GRANT PROXY ON ''@'%' TO 'root'@'localhost' WITH GRANT OPTION

 GRANT USAGE ON *.* TO 'r1'

+GRANT foo   TO 'root'@'localhost' WITH ADMIN OPTION

 GRANT r1 TO 'root'@'localhost' WITH ADMIN OPTION

 drop role r1;

 select * from mysql.roles_mapping;

@@ -24,3 +25,4 @@

 Grants for root@localhost

 GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION

 GRANT PROXY ON ''@'%' TO 'root'@'localhost' WITH GRANT OPTION

+GRANT foo   TO 'root'@'localhost' WITH ADMIN OPTION

mysqltest: Result length mismatch