fix more nightly warnings

Author: msrd0

middleware/diesel/src/lib.rs

@@ -17,7 +17,7 @@
 //! # use gotham::state::{FromState, State};
 //! # use gotham::helpers::http::response::create_response;
 //! # use gotham::handler::HandlerFuture;
-//! # use gotham_middleware_diesel::{self, DieselMiddleware};
+//! # use gotham_middleware_diesel::DieselMiddleware;
 //! # use gotham::hyper::StatusCode;
 //! # use gotham::test::TestServer;
 //! # use gotham::mime::TEXT_PLAIN;

middleware/diesel/src/repo.rs

@@ -29,6 +29,7 @@ use tokio::task;
 /// # }
 ///
 /// #[derive(Queryable, Debug)]
+/// # #[allow(dead_code)]
 /// pub struct User {
 ///     pub id: i32,
 ///     pub name: String,