Your package R-RUnit failed to build from source in current F28. https://koji.fedoraproject.org/koji/taskinfo?taskID=24764081 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
R-ALL-1.6.0-7.fc28 R-RUnit-0.4.26-15.fc28 R-combinat-0.0.8-15.fc28 R-fibroEset-1.6.0-7.fc28 R-pls-2.4.3-9.fc28 R-qcc-2.2-14.fc28 R-qvalue-1.38.0-7.fc28 R-sciplot-1.1.0-12.fc28 R-tkWidgets-1.42.0-7.fc28 R-timeDate-3010.98-9.fc28 R-widgetTools-1.42.0-7.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-ed68cceb2a
R-ALL-1.6.0-7.fc28, R-RUnit-0.4.26-15.fc28, R-combinat-0.0.8-15.fc28, R-fibroEset-1.6.0-7.fc28, R-pls-2.4.3-9.fc28, R-qcc-2.2-14.fc28, R-qvalue-1.38.0-7.fc28, R-sciplot-1.1.0-12.fc28, R-timeDate-3010.98-9.fc28, R-tkWidgets-1.42.0-7.fc28, R-widgetTools-1.42.0-7.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-ed68cceb2a
R-ALL-1.6.0-7.fc28, R-RUnit-0.4.26-15.fc28, R-combinat-0.0.8-15.fc28, R-fibroEset-1.6.0-7.fc28, R-pls-2.4.3-9.fc28, R-qcc-2.2-14.fc28, R-qvalue-1.38.0-7.fc28, R-sciplot-1.1.0-12.fc28, R-timeDate-3010.98-9.fc28, R-tkWidgets-1.42.0-7.fc28, R-widgetTools-1.42.0-7.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.