No trait!

gistfile1.txt

struct Thing {
    x: int
}

impl Thing {
    pure fn mul(c: &int) -> Thing {
        Thing {x: self.x * *c}
    }
}

fn main() {
    let u = Thing {x: 2};
    let v = u.mul(&3); // Works
    let w = u * 3; // Works!!
    io::println(fmt!("%i", w.x));
}