apt-fileのchangelogより
apt-file (3.1.5) unstable; urgency=medium
* Remove rapt-file and two obsolete .sgml files from the source.
* Set R³ to no; apt-file does not need (fake)root during the
binary-targets in the package builds.
* Skip dh_strip_determinism; it is a no-op at the moment and
is planned to be removed eventually.
R³ ?? と思ったらdebian-develにRFCが出てた。また処理するべきことが増えるのかー…。