rpl.rpl_shutdown_wait_slaves 'innodb,mix' [ fail ]

        Test ended at 2020-05-09 21:52:54

CURRENT_TEST: rpl.rpl_shutdown_wait_slaves

analyze: sync_with_master

mysqltest: In included file "/data/bld/10.4-debug-nightly/mysql-test/suite/rpl/include/rpl_shutdown_wait_slaves.inc": 

included from /data/bld/10.4-debug-nightly/mysql-test/suite/rpl/t/rpl_shutdown_wait_slaves.test at line 11:

At line 52: sync_with_master failed: 'select master_pos_wait('master-bin.000001', 162475, 300, '')' returned -1 indicating timeout after 300 seconds

The result from queries just before the failure was:

include/rpl_init.inc [topology=1->2, 1->3, 1->4]

connection server_1;

CREATE TABLE t1 (a INT) ENGINE=innodb;

connection server_2;

connection server_3;

connection server_4;

include/stop_slave.inc

connection server_1;

connection server_1;

SET @@GLOBAL.debug_dbug="+d,simulate_delay_at_shutdown";

connection server_4;

include/start_slave.inc

connection server_1;

SHUTDOWN WAIT FOR ALL SLAVES;

connection server_4;