From: TreePackager <treepkg@example.com>
To: Project Developemen List <project-devel@example.com>
Subject: TreePackager: error builder %(track)s rev. %(revision)s
MIME-Version: 1.0
Content-type: text/plain

Hello,

an error occurred while building the %(track)s packages for revision
%(revision)s.  Details are available in the build log:

  http://example.com/treepkg/%(track)s/%(revision)s/build_log.txt

General information about the status of the packages is available at

  http://example.com/treepkg/