Since late last year crystal made overflow checking the default (https://crystal-lang.org/2019/09/23/crystal-0.31.0-released.html https://crystal-lang.org/2019/

Since late last year crystal made overflow checking the default (https://crystal-lang.org/2019/09/23/crystal-0.31.0-released.html https://crystal-lang.org/2019/09/23/crystal-0.31.0-released....). Dunno how it changed the benchmark.