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-rw-r--r--src/libcore/option.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libcore/option.rs b/src/libcore/option.rs
index 9a00d107147..c5203c5111b 100644
--- a/src/libcore/option.rs
+++ b/src/libcore/option.rs
@@ -274,7 +274,7 @@ impl<T> Option<T> {
     /// # Examples
     ///
     /// ```
-    /// # #![feature(core)]
+    /// # #![feature(as_slice)]
     /// let mut x = Some("Diamonds");
     /// {
     ///     let v = x.as_mut_slice();