span><pre class='rust rust-example-rendered'>
<span class='lifetime'>&#39;a</span>: {
    <span class='kw'>let</span> <span class='ident'>x</span>: <span class='ident'>i32</span> <span class='op'>=</span> <span class='number'>0</span>;
    <span class='lifetime'>&#39;b</span>: {
        <span class='kw'>let</span> <span class='ident'>z</span>: <span class='kw-2'>&amp;</span><span class='lifetime'>&#39;b</span> <span class='ident'>i32</span>;
        <span class='lifetime'>&#39;c</span>: {
            <span 