As an extra idea, on IRC Peter Palfrader suggested never skipping the warning, but always sending it to syslog rather than stderr.
-- - Are you sure we're good? - Always. -- Rory and Lorelai -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org