The tag is present in Lintian version 2.104.328. That is the most recent version we know about.
The specified maintainer script uses
set -e but seems to
udevadm(8) without a conditional guard.
udevadm can exist but be non-functional (such as inside a
chroot) and thus can result in package installation or upgrade failure
if the call fails.
Please guard the return code of the call via wrapping it in a suitable
if construct, appending
|| true or depending on the