The FindBugs project is dead and has been replaced by SpotBugs (See https://github.com/findbugsproject/findbugs or https://mailman.cs.umd.edu/pipermail/findbugs-discuss/2016-November/004321.html or https://news.ycombinator.com/item?id=12885549 or https://github.com/spotbugs/spotbugs)