3 files changed, 4 insertions, 4 deletions
diff --git a/src/libsyntax/ext/deriving/generic/mod.rs b/src/libsyntax/ext/deriving/generic/mod.rs
index dc88ce6d190..02982039be0 100644
--- a/src/libsyntax/ext/deriving/generic/mod.rs
+++ b/src/libsyntax/ext/deriving/generic/mod.rs
@@ -427,7 +427,7 @@ impl<'a> TraitDef<'a> {
             bounds.push(cx.typarambound(trait_path.clone()));
 
             // also add in any bounds from the declaration
-            for declared_bound in ty_param.bounds.iter() {
+            for declared_bound in &*ty_param.bounds {
                 bounds.push((*declared_bound).clone());
             }
 
@@ -974,7 +974,7 @@ impl<'a> MethodDef<'a> {
                     subpats.push(p);
                     idents
                 };
-                for self_arg_name in self_arg_names.tail().iter() {
+                for self_arg_name in self_arg_names.tail() {
                     let (p, idents) = mk_self_pat(cx, &self_arg_name[]);
                     subpats.push(p);
                     self_pats_idents.push(idents);
diff --git a/src/libsyntax/ext/deriving/hash.rs b/src/libsyntax/ext/deriving/hash.rs
index e7f546b2691..efd93226618 100644
--- a/src/libsyntax/ext/deriving/hash.rs
+++ b/src/libsyntax/ext/deriving/hash.rs
@@ -100,7 +100,7 @@ fn hash_substructure(cx: &mut ExtCtxt, trait_span: Span, substr: &Substructure)
         _ => cx.span_bug(trait_span, "impossible substructure in `derive(Hash)`")
     };
 
-    for &FieldInfo { ref self_, span, .. } in fields.iter() {
+    for &FieldInfo { ref self_, span, .. } in fields {
         stmts.push(call_hash(span, self_.clone()));
     }
 
diff --git a/src/libsyntax/ext/deriving/primitive.rs b/src/libsyntax/ext/deriving/primitive.rs
index c694b054ba3..ae7b20f7853 100644
--- a/src/libsyntax/ext/deriving/primitive.rs
+++ b/src/libsyntax/ext/deriving/primitive.rs
@@ -93,7 +93,7 @@ fn cs_from(name: &str, cx: &mut ExtCtxt, trait_span: Span, substr: &Substructure
 
             let mut arms = Vec::new();
 
-            for variant in enum_def.variants.iter() {
+            for variant in &enum_def.variants {
                 match variant.node.kind {
                     ast::TupleVariantKind(ref args) => {
                         if !args.is_empty() {