innodb.monitor failed in buildbot with wrong result

innodb.monitor 'innodb'                  w2 [ fail ]

        Test ended at 2018-03-29 07:16:14

CURRENT_TEST: innodb.monitor

--- /usr/share/mysql/mysql-test/suite/innodb/r/monitor.result	2018-03-29 04:14:13.000000000 -0400

+++ /dev/shm/var/2/log/monitor.reject	2018-03-29 07:16:14.051873878 -0400

@@ -633,7 +633,7 @@

 SELECT NAME, COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME

 LIKE 'buffer_page_written_index_leaf';

 NAME	COUNT

-buffer_page_written_index_leaf	NNNN

+buffer_page_written_index_leaf	NNNNNNNN

 SET GLOBAL innodb_monitor_disable='module_buffer_page';

 SET GLOBAL innodb_monitor_reset_all='module_buffer_page';

 SELECT NAME, COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME

mysqltest: Result length mismatch