refactor(lib): allow warnings in 0.14.x (#3677)

Author: seanmonstar

src/lib.rs

@@ -2,7 +2,8 @@
 #![deny(missing_debug_implementations)]
 #![cfg_attr(test, deny(rust_2018_idioms))]
 #![cfg_attr(all(test, feature = "full"), deny(unreachable_pub))]
-#![cfg_attr(all(test, feature = "full", not(feature = "nightly")), deny(warnings))]
+// 0.14.x is not actively developed, new warnings just get in the way.
+//#![cfg_attr(all(test, feature = "full", not(feature = "nightly")), deny(warnings))]
 #![cfg_attr(all(test, feature = "nightly"), feature(test))]
 #![cfg_attr(docsrs, feature(doc_cfg))]