Lintian tag information: debian-files-list-in-source (type: error)

Description (from lintian-explain-tags)

Leaving debian/files causes problems for the autobuilders, since that file
will likely include the list of .deb files for another architecture, which
will cause dpkg-buildpackage run by the buildd to fail.

The clean rule for the package should remove this file.

Please refer to Generated files list: debian/files (Section 4.12) in the
Debian Policy Manual for details.

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

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