All reports of debian-rules-sets-DH_COMPAT for the archive. The extended description of this tag is:
As of debhelper version 4, the DH_COMPAT environment variable is only to be used for temporarily overriding debian/compat. Any line in debian/rules that sets it globally should be deleted and a separate debian/compat file created if needed.
Refer to the debhelper(7) manual page for details.
This tag has not been emitted in any package tested by Lintian.