Only deny warnings in test

This prevents us breaking builds under newer Rust versions with
additional warnings.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib.rs b/src/lib.rs
index e746c6b2..b983a9c2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -8,7 +8,7 @@
 // latest bitflags triggers a rustc bug with cross-crate macro expansions causing dead_code
 // warnings even though the macro expands into something with allow(dead_code)
 #![allow(dead_code)]
-#![deny(warnings)]
+#![cfg_attr(test, deny(warnings))]
 
 #[macro_use]
 extern crate bitflags;