All reports of changelog-should-mention-nmu for the archive. The extended description of this tag is:

When you NMU a package, that fact should be mentioned on the first line in the changelog entry. Use the words "NMU" or "Non-maintainer upload" (case insensitive).

Maybe you didn't intend this upload to be a NMU, in that case, please doublecheck that the most recent entry in the changelog is byte-for-byte identical to the maintainer or one of the uploaders. If this is a local package (not intended for Debian), you can suppress this warning by putting "local" in the version number or "local package" on the first line of the changelog entry.

Refer to Debian Developer's Reference section 5.11.3 (Using the DELAYED/ queue) for details.

Severity: normal, Certainty: certain

Check: nmu, Type: source

This tag has not been emitted in any package tested by Lintian.