Having trouble with match and enums in rust.

channels.rs

use std::comm::channel;
use std::io::timer::sleep;
use std::sync::deque::BufferPool;
use std::sync::deque::Stolen;

fn main() {
    let (tx, rx) = channel();

    let mut pool = BufferPool::new();
    let (worker, stealer) = pool.deque();
    spawn(proc() {
        for i in range(0, 3) {
            let st = stealer.clone();
            spawn(proc() {
                let mut st = st;
                loop {
                    match st.steal() {
                        //Data((proc_id, val)) => { println!("Stealer {} got {} from Process {}", i, val, proc_id) }
                        Empty =>                { sleep(1000) }
                        Abort =>                { println!("Aborted") }
                        _ =>                    { println!("Stealer {} got something it doesn't know what to do with", i) }
                    }
                }
            });
        }

        let mut worker = worker;
        loop {
            let (id, val): (int, int) = rx.recv();
            worker.push((id, val));
            println!("Process {} sent {}", id, val);
        }
    });
    for i in range(0, 3) {
        let tx = tx.clone();
        spawn(proc() {
            for x in range(0, 10) {
                tx.send((i, x));
                sleep(100u64);
            }
        });
    }

    sleep(10000u64);
}

rustc if I uncomment line 18

channel.rs:18:25: 18:29 error: unresolved enum variant, struct or const `Data`
channel.rs:18                         Data((proc_id, val)) => { println!("Stealer {} got {} from Process {}", i, val, proc_id) }
                                      ^~~~
error: aborting due to previous error

rustc output:

channel.rs:20:25: 20:30 error: unreachable pattern
channel.rs:20                         Abort =>                { println!("Aborted") }
                                      ^~~~~
channel.rs:21:25: 21:26 error: unreachable pattern
channel.rs:21                         _ =>                    { println!("Stealer {} got something it doesn't know what to do with", i) }
                                      ^
error: aborting due to 2 previous errors