Your package ceres-solver failed to build from source in current F28. https://koji.fedoraproject.org/koji/taskinfo?taskID=24772859 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
I'm seeing a test failure when trying to build ceres-solver-1.14.0, issue reported upstream at https://github.com/ceres-solver/ceres-solver/issues/383
The actual FTBFS issue is since resolved.