Changelog for rust-base64_0.12+alloc-devel-0.12.3-2.fc34.noarch.rpm :

* Wed Jan 27 2021 Fedora Release Engineering - 0.12.3-2- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
* Tue Nov 03 2020 Fabio Valentini - 0.12.3-1- Initial compat package for base64 0.12