Your package mutt failed to build from source in current rawhide.
NOTE: build logs are cleaned up after 1 week
For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild
It looks like debian has worked through this and submitted a patch upstream, though there hasn't been a new upstream release since then. The debian bug is: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624085
Thanks for pointing me to that, fixed in Rawhide.