ref: 562f1b51ee293e7cef3a577b7409ea5b2caf0494
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>