Fix some lints

benches/bench_enum.rs

@@ -25,7 +25,7 @@ enum Animal {
 //////////////////////////////////////////////////////////////////////////////
 
 #[deriving(Show)]
-enum Error {
+pub enum Error {
     EndOfStream,
     SyntaxError,
     OtherError(String),

benches/bench_map.rs

@@ -18,7 +18,7 @@ use serde::de::{Deserializer, Deserializable};
 //////////////////////////////////////////////////////////////////////////////
 
 #[deriving(Show)]
-enum Error {
+pub enum Error {
     EndOfStream,
     SyntaxError,
     OtherError(String),

benches/bench_struct.rs

@@ -35,7 +35,7 @@ struct Outer {
 //////////////////////////////////////////////////////////////////////////////
 
 #[deriving(Show)]
-enum Error {
+pub enum Error {
     EndOfStream,
     SyntaxError,
     OtherError(String),

benches/bench_vec.rs

@@ -17,7 +17,7 @@ use serde::de::{Deserializer, Deserializable};
 //////////////////////////////////////////////////////////////////////////////
 
 #[deriving(Show)]
-enum Error {
+pub enum Error {
     EndOfStream,
     SyntaxError,
     OtherError(String),

src/de.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 use std::collections::{HashMap, HashSet, TreeMap, TreeSet};
-use std::gc::{GC, Gc};
 use std::hash::Hash;
 use std::num;
 use std::rc::Rc;
@@ -628,17 +627,6 @@ impl<
     }
 }
 
-impl<
-    D: Deserializer<E>,
-    E,
-    T: Deserializable<D, E> + 'static
-> Deserializable<D, E> for Gc<T> {
-    #[inline]
-    fn deserialize_token(d: &mut D, token: Token) -> Result<Gc<T>, E> {
-        Ok(box (GC) try!(Deserializable::deserialize_token(d, token)))
-    }
-}
-
 impl<
     D: Deserializer<E>,
     E,

src/ser.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 use std::collections::{HashMap, HashSet, TreeMap, TreeSet};
-use std::gc::Gc;
 use std::hash::Hash;
 use std::rc::Rc;
 use std::sync::Arc;
@@ -182,7 +181,6 @@ macro_rules! impl_serializable_box {
 
 impl_serializable_box!(&'a T)
 impl_serializable_box!(Box<T>)
-impl_serializable_box!(Gc<T>)
 impl_serializable_box!(Rc<T>)
 
 impl<