#![allow(unused_variables)]
#![feature(binary_heap_into_iter_sorted)]
fn main() {
    use std::collections::BinaryHeap;
    let heap = BinaryHeap::from([1, 2, 3, 4, 5]);
    assert_eq!(heap.into_iter_sorted().take(2).collect::< Vec < _ >> (), [5, 4]);
}