Your package owfs failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=6976468 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 905030 [details] build.log
Created attachment 905031 [details] root.log
Created attachment 905032 [details] state.log
It was successfully mass-rebuilded few days ago (for TCL). There were no changes in package and now it fails to build?
Fixed in 2.9p5.20140721git6d00fb1-1 (explicit BR: zlib-devel was required for owfs-tcl).