n class="op">&gt;</span> <span class="kw">for</span> <span class="ident">Serial</span><span class="op">&lt;</span><span class="ident">USART1</span><span class="op">&gt;</span> {
    <span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span>;

    <span class="kw">fn</span> <span class="ident">read</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</spa