Description of problem: Fedora 22 is planning to switch over to dnf from yum as per https://fedoraproject.org/wiki/Changes/ReplaceYumWithDNF libreport-python should switch over to using dnf instead of yum in rawhide
Thanks for the report! Upstream ticket: https://github.com/abrt/libreport/issues/291
We have to port DebugInfoDownload class[1] to dnf.Base. 1: https://github.com/abrt/libreport/blob/master/src/client-python/debuginfo.py#L226
These upstream commit fixes this bug: https://github.com/abrt/libreport/commit/7a1f41e579f7d787bf10ee30a883cb72becf7b09 https://github.com/abrt/abrt/commit/a495afebec58381d834ae7c5339751495fa0afd6