Move RBE to stable

This commit moves everything to stable Rust.

In it, we lose a few things:

* FnBox examples
* Associated Constants
* Benchmark tests
* PathExt stuff
* SIMD
* Inline Assembly

These are varying degrees of unfortunate. A better build system
might be able to do nightly vs stable builds for the relevant bits
in the future.

.travis.yml

@@ -2,7 +2,7 @@ language: node_js
 sudo: false
 
 install:
-  - curl -L https://static.rust-lang.org/rustup.sh | sh -s -- --channel=nightly --yes --prefix=$PWD --disable-sudo --disable-ldconfig
+  - curl -L https://static.rust-lang.org/rustup.sh | sh -s -- --yes --prefix=$PWD --disable-sudo --disable-ldconfig
   - export PATH=$PATH:$PWD/bin
   - export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PWD/lib
 

README.md

@@ -13,7 +13,7 @@ See [CONTRIBUTING.md][how-to-contribute].
 
 ### Debian (Ubuntu) prerequisites
 
-Install Rust [nightly](http://www.rust-lang.org/install.html) and
+Install [Rust](http://www.rust-lang.org/install.html) and
 run:
 
 ```

examples/README.md

@@ -11,9 +11,6 @@ for this site][home].
 Be sure to have Rust [installed][install] and the [docs][std] at hand, and
 let's start!
 
-*Note*: Rust by Example uses the latest nightly build. If you're
-following along on your computer, make sure to have it installed.
-
 [rust]: http://www.rust-lang.org/
 [install]: http://www.rust-lang.org/install.html
 [std]: http://doc.rust-lang.org/std/

examples/fn/hof/hof.rs

@@ -1,5 +1,3 @@
-#![feature(iter_arith)]
-
 fn main() {
     println!("Find the sum of all the squared odd numbers under 1000");
     let upper = 1000;
@@ -27,7 +25,7 @@ fn main() {
         (0..).map(|n| n * n)             // All natural numbers squared
              .take_while(|&n| n < upper) // Below upper limit
              .filter(|n| is_odd(*n))     // That are odd
-             .sum();                     // Sum them
+             .fold(0, |sum, i| sum + i); // Sum them
     println!("functional style: {}", sum_of_squared_odd_numbers);
 }
 

examples/std_misc/arg/matching/match_args.rs

@@ -1,5 +1,3 @@
-#![feature(slice_patterns)]
-
 use std::env;
 
 fn increase(number: i32) {
@@ -21,21 +19,23 @@ match_args {{increase|decrease}} <integer>
 fn main() {
     let args: Vec<String> = env::args().collect();
 
-    match &args[..] {
+    match args.len() {
         // no arguments passed
-        [ref name] => {
-            println!("My name is '{}'. Try passing some arguments!", name);
+        1 => {
+            println!("My name is 'match_args'. Try passing some arguments!");
         },
         // one argument passed
-        [_, ref string] => {
-            if string == &"42" {
+        2 => {
+            if &42 == &args[1].parse().unwrap() {
                 println!("This is the answer!");
             } else {
                 println!("This is not the answer.");
             }
         },
         // one command and one argument passed
-        [_, ref cmd, ref num] => {
+        3 => {
+            let cmd = &args[1];
+            let num = &args[2];
             // parse the number
             let number: i32 = match num.parse() {
                 Ok(n) => {

examples/std_misc/fs/fs.rs

@@ -1,5 +1,3 @@
-#![feature(fs_walk)]
-
 use std::fs;
 use std::fs::{File, OpenOptions};
 use std::io;
@@ -80,16 +78,6 @@ fn main() {
         },
     }
 
-    println!("`walk a`");
-    // Recursively walk over the contents of a directory, returns
-    // `Directories`, which implements the `Iterator<Path> trait
-    match fs::walk_dir("a") {
-        Err(why) => println!("! {:?}", why.kind()),
-        Ok(paths) => for path in paths {
-            println!("> {:?}", path.unwrap().path());
-        },
-    }
-
     println!("`rm a/c/e.txt`");
     // Remove a file, returns `io::Result<()>`
     fs::remove_file("a/c/e.txt").unwrap_or_else(|why| {

examples/std_misc/path/path.rs

@@ -1,7 +1,4 @@
-#![feature(path_ext)]
-
 use std::path::Path;
-use std::fs::PathExt;
 
 fn main() {
     // Create a `Path` from an `&'static str`
@@ -10,21 +7,6 @@ fn main() {
     // The `display` method returns a `Show`able structure
     let display = path.display();
 
-    // Check if the path exists
-    if path.exists() {
-        println!("{} exists", display);
-    }
-
-    // Check if the path is a file
-    if path.is_file() {
-        println!("{} is a file", display);
-    }
-
-    // Check if the path is a directory
-    if path.is_dir() {
-        println!("{} is a directory", display);
-    }
-
     // `join` merges a path with a byte container using the OS specific
     // separator, and returns the new path
     let new_path = path.join("a").join("b");