install_package "rubinius-2.5.6" "https://github.com/rubinius/rubinius/releases/download/v2.5.6/rubinius-2.5.6.tar.bz2#a81f57c6a9d38122a974df1debd5dd7900cb9d4a5cd621b2105de716990f807a" warn_eol rbx