              <p>
                  An obs-fold exceeded an internal limit.
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="literal">stale_parser</code>
                </p>
              </td>
<td>
                <p>
                  The parser is stale.
                </p>
                <p>
                  This happens when attempting to re-use a parser that has already
                  completed parsing a message. Programs must construct