main.rpl_mysqldump_slave Fails with "Master binlog wasn't deleted" Assertion

main.rpl_mysqldump_slave 'row'           w5 [ fail ]

        Test ended at 2023-12-05 18:06:55

CURRENT_TEST: main.rpl_mysqldump_slave

mysqldump: Got error: 1049: "Unknown database 'no_such_db'" when selecting the database

mysqltest: At line 125: Master binlog wasn't deleted after mariadb-dump with --delete-master-logs.

The result from queries just before the failure was: 

< snip >

-- CHANGE MASTER TO MASTER_LOG_FILE='slave-bin.000001', MASTER_LOG_POS=BINLOG_START;

-- CHANGE MASTER TO MASTER_USE_GTID=slave_pos;

-- SET GLOBAL gtid_slave_pos='0-2-1003';

3. --master-data --single-transaction

-- CHANGE MASTER TO MASTER_LOG_FILE='slave-bin.000001', MASTER_LOG_POS=BINLOG_START;

CHANGE MASTER TO MASTER_USE_GTID=slave_pos;

SET GLOBAL gtid_slave_pos='0-2-1003';

connection master;

CREATE TABLE t (

id int

);

insert into t values (1); 

insert into t values (2); 

drop table t;

-- CHANGE MASTER TO MASTER_LOG_FILE='master-bin.000002', MASTER_LOG_POS=BINLOG_START;

-- SET GLOBAL gtid_slave_pos='0-1-1005';

# postdump_first_binary_log_filename: master-bin.000001

# postdump_binlog_filename: master-bin.000002

More results from queries before failure can be found in /home/buildbot/amd64-debian-10/build/mysql-test/var/5/log/rpl_mysqldump_slave.log

static my_bool log_in_use_callback(THD *thd, const char *log_name)

{

  my_bool result= 0;

  mysql_mutex_lock(&thd->LOCK_thd_data);

  if (auto linfo= thd->current_linfo)

    result= !strcmp(log_name, linfo->log_file_name);

  mysql_mutex_unlock(&thd->LOCK_thd_data);

  return result;

}

bool log_in_use(const char* log_name)

{

  return server_threads.iterate(log_in_use_callback, log_name);

}