Your package qucs failed to build from source in current rawhide. https://koji.fedoraproject.org/koji/taskinfo?taskID=17788837 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild
Created attachment 1253983 [details] build.log
Created attachment 1253984 [details] root.log
Created attachment 1253985 [details] state.log
This bug appears to have been reported against 'rawhide' during the Fedora 26 development cycle. Changing version to '26'.
The failure is: make[1]: Leaving directory '/builddir/build/BUILD/qucs-0.0.18' + install -d /builddir/build/BUILDROOT/qucs-0.0.18-9.fc26.ppc64le/usr/share/applications + desktop-file-install --add-category X-Fedora --add-category Engineering --set-icon qucs debian/qucs.desktop /builddir/build/BUILDROOT/qucs-0.0.18-9.fc26.ppc64le/usr/share/applications/qucs.desktop: error: value "Education;ElectronicsX-Fedora;Engineering;" for key "Categories" in group "Desktop Entry" contains an unregistered value "ElectronicsX-Fedora"; values extending the format should start with "X-" Error on file "debian/qucs.desktop": Failed to validate the created desktop file error: Bad exit status from /var/tmp/rpm-tmp.8LzXX5 (%install)
The original desktop files is missing a traling semicolon. I will fix it.
ppisar's qucs-0.0.18-10.fc27 completed http://koji.fedoraproject.org/koji/buildinfo?buildID=918222
qucs-0.0.18-10.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-4e77a07df6
qucs-0.0.18-10.fc26 has been pushed to the Fedora 26 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-2017-4e77a07df6
qucs-0.0.18-10.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.