lass='ident'>Clone</span>;</pre>

<!-- We get an error: -->

<p>エラーが発生します。</p>

<pre><code class="language-text">error: cannot convert to a trait object because trait `core::clone::Clone` is not object-safe [E0038]
let o = &amp;v as &amp;Clone;
        ^~
note: the trait cannot require that `Self : Sized`
let o = &amp;v as &amp;Clone;
        ^~
</code></pre>

<!-- The error says that `Clone` is not ‘object-safe’. Only traits that are -->

<!-- object-safe can be made into trait obje