Rust updates

benches/kernel_swap.rs

@@ -1,4 +1,4 @@
-#![feature(asm)]
+#![feature(asm, test)]
 extern crate test;
 use test::Bencher;
 

benches/swap.rs

@@ -1,3 +1,4 @@
+#![feature(test)]
 extern crate test;
 extern crate lwkt;
 use lwkt::Context;

build.rs

@@ -1,7 +1,7 @@
-#![allow(unstable)]
+#![feature(io, path, os)]
-use std::io::Command;
+use std::old_io::Command;
-use std::io::fs::PathExtensions;
+use std::old_io::fs::PathExtensions;
-use std::io::fs;
+use std::old_io::fs;
 use std::os;
 
 fn main() {
@@ -30,7 +30,7 @@ fn main() {
   }
 
   Command::new("ar").args(&["crus", "libcontext.a"])
-                    .args(objects.as_slice())
+                    .args(&*objects)
                     .cwd(&Path::new(&out_dir))
                     .status().unwrap();
 

src/lib.rs

@@ -1,8 +1,8 @@
-#![feature(asm)]
+#![feature(asm, core)]
+#![feature(os, libc)]
 #![no_std]
 
 #[macro_use]
-#[allow(unstable)]
 extern crate core;
 
 #[cfg(test)]

src/platform.rs

@@ -1,4 +1,3 @@
-#![allow(unstable)]
 extern crate libc;
 extern crate std;
 use self::std::prelude::v1::*;