 on GC. Requiring a runtime limits the utility of the
language, and makes it undeserving of the title &quot;systems language&quot;. All Rust
code should need to run is a stack.</p>

<h2 id='match-must-be-exhaustive' class='section-header'><a href='#match-must-be-exhaustive'>1.6 <code>match</code> must be exhaustive</a></h2>
<p><code>match</code> being exhaustive has some useful properties. First, if every
possibility is covered by the <code>match</code>, adding further variants to the <code>enum</code>
in t