Lintian tag information: package-contains-ancient-file (type: error)

Description (from lintian-explain-tags)

Your package contains a file that claims to have been generated more than
20 years ago. This is most probably an error. Your package will be
rejected by the Debian archive scripts if it contains a file with such a
timestamp.

Visibility: error
Show-Always: no
Check: files/date

Show affected packages