All reports of systemd-service-file-refers-to-var-run for the archive. The extended description of this tag is:
The specified systemd service file declares a PIDFile= that references /var/run.
/var/run is now merely a symlink pointing to /run and thus it is now considered best practice that packages use /run directly.
Please update the specified service file.
This tag has not been emitted in any package tested by Lintian.