fn box_clone_and_clone_from_equivalence() {
    for size in (0..8).map(|i| 2usize.pow(i)) {
        let control = vec![Dummy { _data: 42 }; size].into_boxed_slice();
        let clone = control.clone();
        let mut copy = vec![Dummy { _data: 84 }; size].into_boxed_slice();
        copy.clone_from(&control);
        assert_eq!(control, clone);
        assert_eq!(control, copy);
    }
}
Creates a [`Vec`] containing the arguments.

`vec!` allows `Vec`s to be defined with the same syntax as array expressions.
There are tw
benchmarks/haystacks/code/rust-library.rs