maria.encrypt-wrong-key fails with embedded server

maria.encrypt-wrong-key                  w2 [ fail ]

        Test ended at 2016-01-31 07:07:59

CURRENT_TEST: maria.encrypt-wrong-key

mysqltest: At line 11: Failed to open file '/mnt/buildbot/build/mariadb-10.1.11/mysql-test/var/2/run/mysqld.1.pid'

The result from queries just before the failure was:

call mtr.add_suppression("file_key_management");

call mtr.add_suppression("System key id 1 is missing");

call mtr.add_suppression("Unknown key id 1");

call mtr.add_suppression("Failed to decrypt");