--- pkg-config-0.3.9/src/lib.rs.asciiext	2017-01-24 09:27:31.000000000 -0800
+++ pkg-config-0.3.9/src/lib.rs	2018-01-25 18:11:44.581051903 -0800
@@ -64,6 +64,7 @@
 #![doc(html_root_url = "https://docs.rs/pkg-config/0.3")]
 #![cfg_attr(test, deny(warnings))]
 
+#[allow(unused_imports)]
 use std::ascii::AsciiExt;
 use std::env;
 use std::error;