innodb.ibuf_not_empty failed in buildbot with wrong result

innodb.ibuf_not_empty 'innodb'           w2 [ fail ]

        Test ended at 2019-02-18 18:56:03

CURRENT_TEST: innodb.ibuf_not_empty

--- D:/winx64-debug/build/src/mysql-test/suite/innodb/r/ibuf_not_empty.result	2019-02-18 18:19:56.818562200 +0000

+++ D:\winx64-debug\build\src\mysql-test\suite\innodb\r\ibuf_not_empty.reject	2019-02-18 18:55:57.632673200 +0000

@@ -20,6 +20,5 @@

 INSERT INTO t1 SELECT 0,b,c FROM t1;

 check table t1;

 Table	Op	Msg_type	Msg_text

-test.t1	check	Warning	InnoDB: Index 'b' contains #### entries, should be 4096.

-test.t1	check	error	Corrupt

+test.t1	check	status	OK

 DROP TABLE t1;

mysqltest: Result length mismatch