After upgrading appstream to 0.12.2-2 the problem still persists on debian sid.
- Bug#906538: appstream: apt-get update fails due... Johannes Rohr
- Bug#906538: appstream: apt-get update fail... Matthias Klumpp
- Bug#906538: marked as done (appstream: apt... Debian Bug Tracking System
- Bug#906538: Possibly still not fixed antoszka
- Bug#906538: Possibly still not fixed Johannes Winter
- Bug#906538: Possibly still not fixed Christoph Berg
- Bug#906538: Fixed after full upgrade Johannes Winter
- Processed: Re: Bug#906538: Possibly still ... Debian Bug Tracking System