ported over to the new std::io, but it's half the speed of std::old_io

src/json/error.rs

@@ -1,6 +1,6 @@
 use std::error;
 use std::fmt;
-use std::old_io;
+use std::io;
 
 use de::{Token, TokenKind};
 
@@ -82,7 +82,7 @@ impl fmt::Debug for ErrorCode {
 pub enum Error {
     /// msg, line, col
     SyntaxError(ErrorCode, usize, usize),
-    IoError(old_io::IoError),
+    IoError(io::Error),
     ExpectedError(String, String),
     MissingFieldError(String),
     UnknownVariantError(String),
@@ -120,8 +120,8 @@ impl fmt::Display for Error {
     }
 }
 
-impl error::FromError<old_io::IoError> for Error {
-    fn from_error(error: old_io::IoError) -> Error {
+impl error::FromError<io::Error> for Error {
+    fn from_error(error: io::Error) -> Error {
         Error::IoError(error)
     }
 }