Fix the CI

* Caused by the release of url 2.1.1
  See servo/rust-url#579 for details

* A mysql release seems to have broken the macos setup, so use a
absulute path there

azure-pipelines.yml

@@ -53,7 +53,7 @@ jobs:
           brew services start mysql &&
           brew services stop mysql;sleep 3;brew services start mysql &&
           sleep 2 &&
-          mysql -e "create database diesel_test; create database diesel_unit_test; grant all on \`diesel_%\`.* to 'root'@'localhost';" -uroot
+          /usr/local/mysql/bin/mysql -e "create database diesel_test; create database diesel_unit_test; grant all on \`diesel_%\`.* to 'root'@'localhost';" -uroot
         displayName: Install mysql
 
 - template: _build/azure-pipelines-template.yml

diesel_cli/tests/support/project_builder.rs

@@ -102,7 +102,7 @@ impl Project {
 
         let mut db_url =
             url::Url::parse(&env::var_os(var).unwrap().into_string().unwrap()).unwrap();
-        db_url.set_path(&format!("diesel_{}", &self.name));
+        db_url.set_path(&format!("/diesel_{}", &self.name));
         db_url
     }