After upgrading appstream to 0.12.2-2 the problem still persists on debian sid.
- Bug#906538: appstream: apt-get update fails due to appstre... Johannes Rohr
- Bug#906538: appstream: apt-get update fails due to ap... Matthias Klumpp
- 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: Possibly still not fixed Matthias Klumpp
- Bug#906538: Possibly still not fixed Christoph Berg
- Bug#906538: Possibly still not fixed Matthias Klumpp
- Bug#906538: Possibly still not f... Christoph Berg
- Bug#906538: Possibly still n... Matthias Klumpp
- Bug#906538: Fixed after full upgrade Johannes Winter
- Bug#906538: Possibly still not fixed Alan W. Irwin
- Bug#906538: Possibly still not fixed Matthias Klumpp
