/usr/share/mercurial/templates/atom/error.tmpl is in mercurial-common 4.5.3-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | {header}
<!-- Error -->
<id>{urlbase}{url|urlescape}</id>
<link rel="self" href="{urlbase}{url|urlescape}atom-log"/>
<link rel="alternate" href="{urlbase}{url|urlescape}"/>
<title>Error</title>
<updated>1970-01-01T00:00:00+00:00</updated>
<entry>
<title>Error</title>
<id>https://mercurial-scm.org/#error</id>
<author>
<name>mercurial</name>
</author>
<updated>1970-01-01T00:00:00+00:00</updated>
<content type="text">{error|escape}</content>
</entry>
</feed>
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