All reports of debian-watch-file-pubkey-file-is-missing for the archive. The extended description of this tag is:
This watch file verifies a cryptographic signature but the upstream public key is missing.
Please add upstream public keys in either debian/upstream/signing-key.asc or debian/upstream/signing-key.pgp.
Refer to the uscan(1) manual page for details.
This tag has not been emitted in any package tested by Lintian.