ERROR 138 instead of warning, and potential error masking

INSTALL PLUGIN Spider SONAME 'ha_spider.so';

CREATE TABLE t ENGINE=Spider COMMENT='WRAPPER "mysql"';

11.3.0-dbg> INSTALL PLUGIN Spider SONAME 'ha_spider.so';

Query OK, 0 rows affected, 1 warning (0.285 sec)

11.3.0-dbg> CREATE TABLE ts1 ENGINE=Spider COMMENT='WRAPPER "mysql",TABLE "t1"';

ERROR 1429 (HY000): Unable to connect to foreign data source: localhost

11.4.0-opt> INSTALL PLUGIN Spider SONAME 'ha_spider.so';

Query OK, 0 rows affected, 1 warning (0.284 sec)

11.4.0-opt> CREATE TABLE ts1 ENGINE=Spider COMMENT='WRAPPER "mysql",TABLE "t1"';

ERROR 138 (0A000): Spider table params in COMMENT or CONNECTION strings have been deprecated and will be removed in a future release. Please use table options instead.