Galera test failure on galera_autoinc_sst_mariabackup

CURRENT_TEST: galera.galera_autoinc_sst_mariabackup

mysqltest: In included file "./include/galera_wait_ready.inc": 

included from /home/jenkins/workspace/10.3e-DEV-GALERA/BuildType/RelWithDebInfo/label/debian-9/mysql-test/suite/galera/include/start_mysqld.inc at line 16:

included from /home/jenkins/workspace/10.3e-DEV-GALERA/BuildType/RelWithDebInfo/label/debian-9/mysql-test/suite/galera/t/galera_autoinc_sst_mariabackup.test at line 49:

At line 33: "Server did not transition to READY state"

The result from queries just before the failure was:

< snip >

connection node_2;

connection node_1;

CREATE TABLE t1 (f1 INTEGER PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB;

CREATE PROCEDURE p1 ()

BEGIN

DECLARE x INT DEFAULT 1;

DECLARE CONTINUE HANDLER FOR SQLEXCEPTION BEGIN END;

WHILE 1 DO

INSERT INTO t1 VALUES (DEFAULT);

COMMIT;

END WHILE;

END|

CALL p1();;

connection node_2;

CALL p1();;

connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;

connection node_2a;

Killing server ...