Your package masscan failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=10112636 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild
Created attachment 1047316 [details] build.log
Created attachment 1047317 [details] root.log
Created attachment 1047318 [details] state.log
Taking. This FTBFS is caused by upstream is utilizing compiler versions specific checks, which do not honor gcc-5 and thus fails on newer fedoras. I am going to apply a trivial patch to work around this issue.
This FTBFS affects fedora 22-24. Changes applied to and package rebuilt for: fc24: https://koji.fedoraproject.org/koji/taskinfo?taskID=10364155 fc23: https://koji.fedoraproject.org/koji/taskinfo?taskID=10364265 fc22: https://koji.fedoraproject.org/koji/taskinfo?taskID=10365109