Filter out errors matching a regex (operates on HTML not text, you have to manually escape entities): <input oninput="maskErrors(this.value)">

<p>Passed: <span id=passed>0</span> (<span id=percent></span>%).  Failed: <span id=failed>0</span>.  Time to complete: <span id=time>0</span> s.

<div id=errors></div>

<script src=original-harness.js></script>
<script src=elements-metadata.js></script>
<script src=elements-sections.js></script>
<script src=elements-grouping.js></script>
<script src=elements-text.js