sed -i -s 's/#\[deriving(/#\[derive(/g' **/*.rs

src/libstd/io/util.rs

@@ -81,7 +81,7 @@ impl<R: Buffer> Buffer for LimitReader<R> {
 }
 
 /// A `Writer` which ignores bytes written to it, like /dev/null.
-#[deriving(Copy)]
+#[derive(Copy)]
 pub struct NullWriter;
 
 impl Writer for NullWriter {
@@ -90,7 +90,7 @@ impl Writer for NullWriter {
 }
 
 /// A `Reader` which returns an infinite stream of 0 bytes, like /dev/zero.
-#[deriving(Copy)]
+#[derive(Copy)]
 pub struct ZeroReader;
 
 impl Reader for ZeroReader {
@@ -111,7 +111,7 @@ impl Buffer for ZeroReader {
 }
 
 /// A `Reader` which is always at EOF, like /dev/null.
-#[deriving(Copy)]
+#[derive(Copy)]
 pub struct NullReader;
 
 impl Reader for NullReader {
@@ -163,7 +163,7 @@ impl Writer for MultiWriter {
 
 /// A `Reader` which chains input from multiple `Reader`s, reading each to
 /// completion before moving onto the next.
-#[deriving(Clone)]
+#[derive(Clone)]
 pub struct ChainedReader<I, R> {
     readers: I,
     cur_reader: Option<R>,
@@ -247,7 +247,7 @@ pub fn copy<R: Reader, W: Writer>(r: &mut R, w: &mut W) -> io::IoResult<()> {
 }
 
 /// An adaptor converting an `Iterator<u8>` to a `Reader`.
-#[deriving(Clone)]
+#[derive(Clone)]
 pub struct IterReader<T> {
     iter: T,
 }