Your package heimdal failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=12822756 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild
Created attachment 1124906 [details] build.log
Created attachment 1124907 [details] root.log
Created attachment 1124908 [details] state.log
Reported upstream at https://github.com/heimdal/heimdal/issues/155
This bug appears to have been reported against 'rawhide' during the Fedora 24 development cycle. Changing version to '24'. More information and reason for this action is here: https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora24#Rawhide_Rebase
ktdreyer's heimdal-7.1.0-1.fc26 completed http://koji.fedoraproject.org/koji/buildinfo?buildID=830073