Follow rust-lang/rust#13268

Author: Kroisse

src/mustache/builder.rs

@@ -120,7 +120,7 @@ impl<'a> MapBuilder<'a> {
     ///     .build();
     /// ```
     #[inline]
-    pub fn insert_fn(self, key: ~str, f: 'a |~str| -> ~str) -> MapBuilder<'a> {
+    pub fn insert_fn(self, key: ~str, f: |~str|: 'a -> ~str) -> MapBuilder<'a> {
         let MapBuilder { mut data } = self;
         data.insert(key, Fun(f));
         MapBuilder { data: data }
@@ -249,7 +249,7 @@ impl<'a> VecBuilder<'a> {
     ///     .build();
     /// ```
     #[inline]
-    pub fn push_fn(self, f: 'a |~str| -> ~str) -> VecBuilder<'a> {
+    pub fn push_fn(self, f: |~str|: 'a -> ~str) -> VecBuilder<'a> {
         let VecBuilder { mut data } = self;
         data.push(Fun(f));
         VecBuilder { data: data }

src/mustache/lib.rs

@@ -34,7 +34,7 @@ pub enum Data<'a> {
     Bool(bool),
     Vec(Vec<Data<'a>>),
     Map(HashMap<~str, Data<'a>>),
-    Fun('a |~str| -> ~str),
+    Fun(|~str|: 'a -> ~str),
 }
 
 impl<'a> Eq for Data<'a> {