tests: Import log macros

Author: Turbo87

src/tests/all.rs

@@ -7,6 +7,8 @@ extern crate diesel;
 #[macro_use]
 extern crate lazy_static;
 #[macro_use]
+extern crate log;
+#[macro_use]
 extern crate serde;
 #[macro_use]
 extern crate serde_json;