Test failure on galera.galera_wan

galera.galera_wan 'innodb_plugin'        w2 [ fail ]

        Test ended at 2018-09-21 02:15:57

CURRENT_TEST: galera.galera_wan

Could not execute 'check-testcase' before testcase 'galera.galera_wan' (res: 1):

mysqltest: Logging to '/run/shm/var/2/tmp/check-mysqld_2.log'.

mysqltest: Results saved in '/run/shm/var/2/tmp/check-mysqld_2.result'.

mysqltest: Connecting to server localhost:16041 (socket /run/shm/var/tmp/2/mysqld.2.sock) as 'root', connection 'default', attempt 0 ...

mysqltest: ... Connected.

mysqltest: Start processing test commands from './include/check-testcase.test' ...

mysqltest: At line 19: query 'let $tmp= `SELECT '$tmp' = 'No such row'`' failed: 1205: Lock wait timeout exceeded; try restarting transaction

not ok

mysqltest failed but provided no output