Your package rwall failed to build from source in current F28. https://koji.fedoraproject.org/koji/taskinfo?taskID=24894444 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
FTBFS due to: https://fedoraproject.org/wiki/Changes/SunRPCRemoval Fixed in: https://src.fedoraproject.org/rpms/rwall/c/69d01575bf2cf0e09f4b0de80cf269e1dc29a9c7?branch=f28
rwall-0.17-50.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-fa6770eb2f
rwall-0.17-50.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-fa6770eb2f
rwall-0.17-51.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-a33c6dc253
rwall-0.17-51.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-a33c6dc253
rwall-0.17-51.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.