[duck@daedalus archlinux-bot]$ ruby readertest.rb
Downloading core.db.tar.gz... /usr/lib/ruby/1.9.1/net/ftp.rb:369:in `gethostbyname': getaddrinfo: Name or service not known (SocketError)
        from /usr/lib/ruby/1.9.1/net/ftp.rb:369:in `getaddress'
        from /usr/lib/ruby/1.9.1/net/ftp.rb:392:in `login'
        from /usr/lib/ruby/1.9.1/open-uri.rb:809:in `buffer_open'
        from /usr/lib/ruby/1.9.1/open-uri.rb:203:in `block in open_loop'
        from /usr/lib/ruby/1.9.1/open-uri.rb:201:in `catch'
        from /usr/lib/ruby/1.9.1/open-uri.rb:201:in `open_loop'
        from /usr/lib/ruby/1.9.1/open-uri.rb:146:in `open_uri'
        from /usr/lib/ruby/1.9.1/open-uri.rb:669:in `open'
        from /usr/lib/ruby/1.9.1/open-uri.rb:33:in `open'
        from readertest.rb:10:in `<main>'
[duck@daedalus archlinux-bot]$