zoorat [1] filed a deletion request for checkstyle-bin [2]: Dead source, Last Updated: 2017-12-06 01:34, Flagged out-of-date (2019-08-23). and package "checkstyle" is the same and well maintained.
[1] https://aur.archlinux.org/account/zoorat/ [2] https://aur.archlinux.org/pkgbase/checkstyle-bin/
