innodb.innodb_trx_weight fails in buildbot

innodb.innodb_trx_weight 'xtradb'        w3 [ fail ]

        Test ended at 2016-10-27 08:30:49

CURRENT_TEST: innodb.innodb_trx_weight

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

included from /usr/local/mariadb-10.2.3-linux-x86_64/mysql-test/suite/innodb/t/innodb_trx_weight.test at line 99:

At line 29: query 'reap' succeeded - should have failed with errno 1213...

The result from queries just before the failure was:

SET storage_engine=InnoDB;

 - saving '/usr/local/mariadb-10.2.3-linux-x86_64/mysql-test/var/3/log/innodb.innodb_trx_weight-xtradb/' to '/usr/local/mariadb-10.2.3-linux-x86_64/mysql-test/var/log/innodb.innodb_trx_weight-xtradb/'

Retrying test innodb.innodb_trx_weight, attempt(2/3)...

worker[3] > Restart  - not started

innodb.innodb_trx_weight 'xtradb'        w3 [ retry-pass ]     38