#![feature(rustc_private)]
extern crate serialize;
+use serialize as rustc_serialize;
use std::io::Cursor;
use std::io::prelude::*;
use serialize::json;
use serialize::opaque;
-#[derive(Encodable)]
+#[derive(RustcEncodable)]
struct Foo {
baz: bool,
}
-#[derive(Encodable)]
+#[derive(RustcEncodable)]
struct Bar {
froboz: usize,
}