Update to rust master

1 files changed, 2 insertions, 0 deletions

diff --git a/src/channel.rs b/src/channel.rs
index 6f951f2..bed303f 100644
--- a/src/channel.rs
+++ b/src/channel.rs
@@ -29,6 +29,7 @@ pub struct ExitSignal {
 }
 
 /// Description of the read window as returned by `Channel::read_window`
+#[deriving(Copy)]
 pub struct ReadWindow {
     /// The number of bytes which the remote end may send without overflowing
     /// the window limit.
@@ -40,6 +41,7 @@ pub struct ReadWindow {
 }
 
 /// Description of the write window as returned by `Channel::write_window`
+#[deriving(Copy)]
 pub struct WriteWindow {
     /// The number of bytes which may be safely written on the channel without
     /// blocking.