It looks like you try to run code in the binary-arch target of
debian/rules, even though your package is architecture-
The tag is present in Lintian version
That is the most recent version we know about.
We use semantic versions.
The patch number is a commit step indicator relative to the
release tag in our Git
You can find the detection logic for this version at commit c1c05b0. For merge requests, please use the latest version in the Lintian check debian/rules.