rpl.rpl_manual_change_index_file occasionally fails in BB with Result length mismatch

rpl.rpl_manual_change_index_file 'row'   w30 [ fail ]

        Test ended at 2022-12-12 10:53:42

CURRENT_TEST: rpl.rpl_manual_change_index_file

--- /home/buildbot/amd64-ubuntu-1804-bigtest/build/mysql-test/suite/rpl/r/rpl_manual_change_index_file.result	2022-12-12 07:52:58.000000000 +0000

+++ /home/buildbot/amd64-ubuntu-1804-bigtest/build/mysql-test/suite/rpl/r/rpl_manual_change_index_file.reject	2022-12-12 10:53:42.390734033 +0000

@@ -13,7 +13,7 @@

 call mtr.add_suppression('Got fatal error 1236 from master when reading data from binary log: .*could not find next log');

 connection slave;

 include/wait_for_slave_io_error.inc [errno=1236]

-Last_IO_Error = 'Got fatal error 1236 from master when reading data from binary log: 'could not find next log; the first event 'master-bin.000001' at XXX, the last event read from 'master-bin.000002' at XXX, the last byte read from 'master-bin.000002' at XXX.''

+Last_IO_Error = 'Got fatal error 1236 from master when reading data from binary log: 'could not find next log; the first event '.' at XXX, the last event read from 'master-bin.000002' at XXX, the last byte read from 'master-bin.000002' at XXX.''

 connection master;

 CREATE TABLE t2(c1 INT);

 FLUSH LOGS;

mysqltest: Result length mismatch