database migration error

[jackyzy823]

migration with new database (from v0.3.1)

just using docker-compose.yaml
diesel_migration raise error:

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: HandlerError { kind: MigrationErrorDb("Failed with: You have an error in your SQL syntax; check the
 manual that corresponds to your MySQL server version for the right syntax to use near \'DELIMITER $$\nDROP PROCEDURE IF EXISTS `create_index` $$\nCREATE PROCEDURE `create\' at line 4"), backtrace:    0: pushb
ox::db::run_embedded_migrations

I think it may be related to DELIMITER can be only used in mysql cli but not SQL file.

Related Issue: diesel-rs/diesel#2622.

migration with exists database
since the name/timestamp 2018-03-28-211330_create_users_table not changed , so the up.sql will not be executed by diesel_migration again.