This error confused me badly: ``` $ ./myprog --dsn='user:pass@tcp(10.154.146.190:3306)' 2013/12/05 22:37:43 Error 1045: Access denied for user ''@'127.0.0.1' (using password: NO) ``` The issue is that the DSN is missing a trailing slash. Can the driver reject that during `sql.Open()` and give better feedback to the user?