ref: 1eb7a858acdb58be016659a35e3c6cf54bf8cf86
dir: /sys/lib/python/mercurial/templates/rss/error.tmpl/
{header}
<title>Error</title>
<description>Error</description>
<item>
<title>Error</title>
<description>{error|escape}</description>
<guid>http://mercurial.selenic.com/#error</guid>
</item>
</channel>
</rss>