remove unused mut qualifiers

3 files changed, 2 insertions, 4 deletions

diff --git a/src/libsyntax/attr.rs b/src/libsyntax/attr.rs
index e5cd6f63690..301a18892d8 100644
--- a/src/libsyntax/attr.rs
+++ b/src/libsyntax/attr.rs
@@ -373,7 +373,7 @@ impl fmt::Display for StabilityLevel {
 fn find_stability_generic<'a,
                               AM: AttrMetaMethods,
                               I: Iterator<Item=&'a AM>>
-                             (diagnostic: &SpanHandler, mut attrs: I, item_sp: Span)
+                             (diagnostic: &SpanHandler, attrs: I, item_sp: Span)
                              -> (Option<Stability>, Vec<&'a AM>) {
 
     let mut stab: Option<Stability> = None;
diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 73424136cfb..74d89d1d6ff 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -23,8 +23,6 @@
        html_favicon_url = "http://www.rust-lang.org/favicon.ico",
        html_root_url = "http://doc.rust-lang.org/nightly/")]
 
-#![cfg_attr(not(stage0), allow(unused_mut))] // NOTE: remove after stage0 snap
-
 #![feature(box_syntax)]
 #![feature(collections)]
 #![feature(core)]
diff --git a/src/libsyntax/util/small_vector.rs b/src/libsyntax/util/small_vector.rs
index 12f871b2782..a6c92c03743 100644
--- a/src/libsyntax/util/small_vector.rs
+++ b/src/libsyntax/util/small_vector.rs
@@ -38,7 +38,7 @@ impl<T> FromIterator<T> for SmallVector<T> {
 }
 
 impl<T> Extend<T> for SmallVector<T> {
-    fn extend<I: Iterator<Item=T>>(&mut self, mut iter: I) {
+    fn extend<I: Iterator<Item=T>>(&mut self, iter: I) {
         for val in iter {
             self.push(val);
         }