<p>In <a href="https://github.com/mlpack/mlpack/pull/567#discussion_r55998863">src/mlpack/tests/cli_test.cpp</a>:</p>
<pre style='color:#555'>&gt; @@ -7,6 +7,8 @@
&gt;  
&gt;  #include &lt;iostream&gt;
&gt;  #include &lt;sstream&gt;
&gt; +#include &lt;chrono&gt;
</pre>
<p>This is a really minor comment but I think that this include is unnecessary because timers.hop includes chrono already.</p>

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