(fix) Update for latest rust and iron.

.travis.yml

@@ -1,15 +1,11 @@
-os:
-- linux
+language: rust
+sudo: false
 env:
-  matrix:
-  - LD_LIBRARY_PATH=/usr/local/lib:/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib/
   global:
     secure: PqrYTLi97gu+3ABt7ODlekU8TPC6Rs7bXIXGa6+BArn6W+0gPja6XVuxsly+8oUq7p38RyK5m6YghJmTQp27DEXyVTh9SGUlP7wVwrwTo8zydjDSn6TGzWIoSM0j7duHf9dAXP6+TEknueR/fj6c72koxawYdRPs+pL4ekULNFY=
-install:
-- curl https://static.rust-lang.org/rustup.sh | sudo sh
 script:
-- cargo build --verbose
-- cargo test --verbose
-- cargo doc
+- cargo build
+- cargo test
+- cargo bench
 after_success: 'curl https://raw.githubusercontent.com/iron-bot/build-doc/master/build-doc.sh
   | sh '

examples/hitcounter.rs

@@ -7,7 +7,7 @@ use persistent::Write;
 use iron::typemap::Key;
 use iron::{status};
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct HitCounter;
 
 impl Key for HitCounter { type Value = usize; }

src/lib.rs

@@ -1,6 +1,5 @@
 #![cfg_attr(test, deny(warnings))]
 #![deny(missing_docs)]
-#![feature(core)]
 
 //! A set of middleware for sharing data between requests in the Iron
 //! framework.