binlog.show_concurrent_rotate failed in buildbot with wrong result

binlog.show_concurrent_rotate 'row'      w1 [ fail ]

        Test ended at 2019-07-29 11:46:47

CURRENT_TEST: binlog.show_concurrent_rotate

--- /usr/share/mysql-test/suite/binlog/r/show_concurrent_rotate.result	2019-07-29 09:56:59.000000000 +0000

+++ /dev/shm/var/1/log/show_concurrent_rotate.reject	2019-07-29 11:46:47.623678871 +0000

@@ -12,5 +12,4 @@

 # The correct result must consists of two records

 Log_name	File_size

 master-bin.000001	#

-master-bin.000002	#

 SET debug_sync = 'reset';

mysqltest: Result length mismatch