Package: dose-distcheck Version: 5.0.1-11 Severity: normal $ /usr/bin/dose-debcheck --failures --explain ~/my-simple-cdd/tmp/cd-build/buster/CD1/dists/buster/main/binary-amd64/Packages.gz Fatal error in module common/format822.ml: character 19-0: RFC 822 error. Uncompressed Packages and bzip2 an xz compressed Packages work without problems.