Remove #[deny(warnings)] but enforce on CI

Author: eldruin

.travis.yml

@@ -1,5 +1,9 @@
 language: rust
 
+env:
+  global:
+    - RUSTFLAGS="-D warnings"
+
 matrix:
   include:
     # MSRV

panic/src/lib.rs

@@ -64,7 +64,6 @@
 //! When this feature is disabled `dcc::write` is implemented using FFI calls into an external
 //! assembly file and compiling this crate works on stable and beta.
 
-
 #![deny(missing_docs)]
 #![deny(warnings)]
 #![no_std]

src/lib.rs

@@ -74,7 +74,6 @@
 
 #![cfg_attr(feature = "inline-asm", feature(llvm_asm))]
 #![deny(missing_docs)]
-#![deny(warnings)]
 #![no_std]
 
 use core::fmt;