Your package fails to build with the newest upcoming autoconf-2.71, which is part of a wide Fedora change. Please see the attached copr: https://copr.fedorainfracloud.org/coprs/odubaj/autoconf-2.70/packages/. More information about testing your package when building with autoconf available here: https://fedoraproject.org/wiki/Changes/Autoconf_271#How_To_Test
The log says: !! Copr timeout => sending INT Copr build error: Build failed and the build is well into building calc at that point, far past the autoconf/configure stage, so I believe that libreoffice is ok wrt the upcoming autoconf-2.71 and its a generic timeout after 5 hours