#![allow(unused_variables)]
#![feature(linked_list_remove)]
fn main() {
    use std::collections::LinkedList;
    let mut d = LinkedList::new();
    d.push_front(1);
    d.push_front(2);
    d.push_front(3);
    assert_eq!(d.remove(1), 2);
    assert_eq!(d.remove(0), 3);
    assert_eq!(d.remove(0), 1);
}