install_package "rubinius-2.5.1" "https://github.com/rubinius/rubinius/releases/download/v2.5.1/rubinius-2.5.1.tar.bz2#00d6f23b7632d035d322209e736a9341155350a9d169e8471d38a554a8e26600" warn_eol rbx
