Your package cross-gcc failed to build from source in current rawhide. https://koji.fedoraproject.org/koji/taskinfo?taskID=17712686 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild
Created attachment 1251693 [details] build.log
Created attachment 1251694 [details] root.log
Created attachment 1251695 [details] state.log
This is already replaced with cross-gcc-7 in rawhide.