> <span class='ident'>it_works</span>() {
        <span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>4</span>, <span class='ident'>add_two</span>(<span class='number'>2</span>));
    }

    <span class='attribute'>#[<span class='ident'>bench</span>]</span>
    <span class='kw'>fn</span> <span class='ident'>bench_add_two</span>(<span class='ident'>b</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
        <span class