innodb.alter_kill failed in buildbot with wrong result

innodb.alter_kill 'innodb'               w1 [ fail ]

        Test ended at 2018-08-03 06:41:41

CURRENT_TEST: innodb.alter_kill

--- D:/win32-packages/build/src/mysql-test/suite/innodb/r/alter_kill.result	2018-08-03 05:45:07.000000000 +0000

+++ D:\win32-packages\build\src\mysql-test\suite\innodb\r\alter_kill.reject	2018-08-03 06:41:25.977718200 +0000

@@ -62,7 +62,7 @@

 # Kill the server

 disconnect con1;

 # Attempt to start without an *.ibd file.

-FOUND 1 /\[ERROR\] InnoDB: Tablespace [0-9]+ was not found at .*test.bug16735660.ibd/ in mysqld.1.err

+NOT FOUND /\[ERROR\] InnoDB: Tablespace [0-9]+ was not found at .*test.bug16735660.ibd/ in mysqld.1.err

 SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;

 SELECT * FROM bug16735660;

 a

mysqltest: Result length mismatch