uses-debhelper-compat-file

This package declares its debhelper compatibility level with the debian/compat file.

The recommended way to do so is to use the virtual package debhelper-compat instead.

From debhelper 14 onward, using debian/compat will not work anymore.

As such, unless you need an experimental or beta compatibility level, please remove the debian/compat file and add the debhelper-compat virtual package to your Build-Depends, for example:

Build-Depends: debhelper-compat (= 13)
Severity: warning
Experimental: false

See also