#![allow(unused_variables)]
fn main() {
    let boxed: Box<str> = Box::from("hello");
    let boxed_str: Box<[u8]> = Box::from(boxed);
    let slice: &[u8] = &[104, 101, 108, 108, 111];
    let boxed_slice = Box::from(slice);
    assert_eq!(boxed_slice, boxed_str);
}