Changelog for qt-devel-4.8.7-55.fc31.i686.rpm :

* Thu Aug 13 2020 Than Ngo - 4.8.7-55- fixed #1868534 - CVE-2020-17507
* Wed Jul 29 2020 Fedora Release Engineering - 1:4.8.7-54- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
* Wed Jul 01 2020 Jeff Law - 4.8.7-53- Disable LTO
* Fri Jan 31 2020 Than Ngo - 4.8.7-52- fixed FTBFS against gcc10
* Thu Jan 30 2020 Fedora Release Engineering - 1:4.8.7-51- Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild