auto merge of #9900 : hatahet/rust/master, r=alexcrichton

bors · bors · commit 2cb96a4eaf55 · 2013-10-17T02:46:24.000-07:00
Closes #9870
diff --git a/src/libstd/num/num.rs b/src/libstd/num/num.rs
@@ -861,7 +861,7 @@ impl_from_primitive!(f64, n.to_f64())
 /// # Example
 ///
 /// ```
-/// let twenty: f32 = num::cast(0x14);
+/// let twenty: f32 = num::cast(0x14).unwrap();
 /// assert_eq!(twenty, 20f32);
 /// ```
 ///
