diff -up iron-0.6.1/src/lib.rs.orig iron-0.6.1/src/lib.rs
--- iron-0.6.1/src/lib.rs.orig	2019-08-14 20:14:19.000000000 +0200
+++ iron-0.6.1/src/lib.rs	2021-01-28 20:39:51.279398725 +0100
@@ -1,5 +1,4 @@
 #![doc(html_logo_url = "https://avatars0.githubusercontent.com/u/7853871?s=128", html_favicon_url = "https://avatars0.githubusercontent.com/u/7853871?s=256", html_root_url = "http://ironframework.io/core/iron")]
-#![cfg_attr(test, deny(warnings))]
 #![allow(bare_trait_objects)]
 #![deny(missing_docs)]