Package: apt-cacher-ng Version: 3.2-1 Severity: serious This bug is basically reminder to myself and not to whoever runs into this issue.
Looks like apt-cacher-ng expiery manages to maneuver itself into a state which cannot be recovered. It reports non-existent files from apparently guessed sources, like: Error summary: debrep/dists/jessie/main/installer-amd64/current/images/SHA256SUMS: 404 Not Found debrep/dists/stretch/main/installer-amd64/20170615+deb9u5+b2/images/SHA256SUMS: 404 Not Found localhost/ftp.de.debian.org/debian/dists/stretch/main/installer-amd64/20170615+deb9u5+b2/images/SHA256SUMS: 404 Not Found localhost/ftp.de.debian.org/debian/dists/stretch/main/installer-amd64/20170615/images/SHA256SUMS: 404 Not Found I have a vague idea where it comes from (old heuristics which fetched voluntarily additional metadata which was not well linked in old Debian versions, like 10 years ago). This needs to be investigated (digging through history) and probably removed, or fixed. -- Package-specific info: -- System Information: Debian Release: buster/sid APT prefers unstable-debug APT policy: (500, 'unstable-debug'), (500, 'unstable'), (500, 'testing'), (1, 'experimental-debug'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386