Perhaps you should add an `TESTS_PHINX_DB_ADAPTER_SQLSRV_ENABLED=false` 'env' variable to the [.travis.yml](https://github.com/dakota/phinx/blob/sqlsrv/.travis.yml#L12) so that the CI tool, which doesn't provide a MS SQL environment for testing can continue on happily, skipping what it can't offer.