Fallout from stabilization

5 files changed, 5 insertions, 6 deletions

diff --git a/src/libsyntax/ast_map/mod.rs b/src/libsyntax/ast_map/mod.rs
index 8a2202d28d5..6b97b931ef7 100644
--- a/src/libsyntax/ast_map/mod.rs
+++ b/src/libsyntax/ast_map/mod.rs
@@ -87,7 +87,7 @@ impl<'a, T: Copy> Iterator<T> for Values<'a, T> {
 /// The type of the iterator used by with_path.
 pub type PathElems<'a, 'b> = iter::Chain<Values<'a, PathElem>, LinkedPath<'b>>;
 
-pub fn path_to_string<PI: Iterator<PathElem>>(mut path: PI) -> String {
+pub fn path_to_string<PI: Iterator<PathElem>>(path: PI) -> String {
     let itr = token::get_ident_interner();
 
     path.fold(String::new(), |mut s, e| {
diff --git a/src/libsyntax/config.rs b/src/libsyntax/config.rs
index 257bfd69f43..4f718555d53 100644
--- a/src/libsyntax/config.rs
+++ b/src/libsyntax/config.rs
@@ -131,7 +131,7 @@ fn fold_item_underscore(cx: &mut Context, item: ast::Item_) -> ast::Item_ {
             ast::ItemStruct(fold_struct(cx, def), generics)
         }
         ast::ItemEnum(def, generics) => {
-            let mut variants = def.variants.into_iter().filter_map(|v| {
+            let variants = def.variants.into_iter().filter_map(|v| {
                 if !(cx.in_cfg)(v.node.attrs.as_slice()) {
                     None
                 } else {
@@ -273,4 +273,3 @@ fn in_cfg(diagnostic: &SpanHandler, cfg: &[P<ast::MetaItem>], attrs: &[ast::Attr
         attr::cfg_matches(diagnostic, cfg, &*mis[0])
     })
 }
-
diff --git a/src/libsyntax/ext/base.rs b/src/libsyntax/ext/base.rs
index 1cbc2b98c93..8d0d399fa31 100644
--- a/src/libsyntax/ext/base.rs
+++ b/src/libsyntax/ext/base.rs
@@ -210,7 +210,7 @@ pub struct MacItems {
 }
 
 impl MacItems {
-    pub fn new<I: Iterator<P<ast::Item>>>(mut it: I) -> Box<MacResult+'static> {
+    pub fn new<I: Iterator<P<ast::Item>>>(it: I) -> Box<MacResult+'static> {
         box MacItems { items: it.collect() } as Box<MacResult+'static>
     }
 }
diff --git a/src/libsyntax/ext/format.rs b/src/libsyntax/ext/format.rs
index b04a800a32d..490246f8246 100644
--- a/src/libsyntax/ext/format.rs
+++ b/src/libsyntax/ext/format.rs
@@ -580,7 +580,7 @@ impl<'a, 'b> Context<'a, 'b> {
         let slicename = self.ecx.ident_of("__args_vec");
         {
             let args = names.into_iter().map(|a| a.unwrap());
-            let mut args = locals.into_iter().chain(args);
+            let args = locals.into_iter().chain(args);
             let args = self.ecx.expr_vec_slice(self.fmtsp, args.collect());
             lets.push(self.ecx.stmt_let(self.fmtsp, false, slicename, args));
         }
diff --git a/src/libsyntax/owned_slice.rs b/src/libsyntax/owned_slice.rs
index f622e2d6112..b31b20c80c2 100644
--- a/src/libsyntax/owned_slice.rs
+++ b/src/libsyntax/owned_slice.rs
@@ -145,7 +145,7 @@ impl<T: PartialEq> PartialEq for OwnedSlice<T> {
 impl<T: Eq> Eq for OwnedSlice<T> {}
 
 impl<T> FromIterator<T> for OwnedSlice<T> {
-    fn from_iter<I: Iterator<T>>(mut iter: I) -> OwnedSlice<T> {
+    fn from_iter<I: Iterator<T>>(iter: I) -> OwnedSlice<T> {
         OwnedSlice::from_vec(iter.collect())
     }
 }