sublime text|gedit

Standard output is empty

/usr/lib/ruby/1.9.1/net/http.rb:762:in `initialize': getaddrinfo: Name or service not known (SocketError)
	from /usr/lib/ruby/1.9.1/net/http.rb:762:in `open'
	from /usr/lib/ruby/1.9.1/net/http.rb:762:in `block in connect'
	from /usr/lib/ruby/1.9.1/timeout.rb:54:in `timeout'
	from /usr/lib/ruby/1.9.1/timeout.rb:99:in `timeout'
	from /usr/lib/ruby/1.9.1/net/http.rb:762:in `connect'
	from /usr/lib/ruby/1.9.1/net/http.rb:755:in `do_start'
	from /usr/lib/ruby/1.9.1/net/http.rb:744:in `start'
	from /usr/lib/ruby/1.9.1/open-uri.rb:306:in `open_http'
	from /usr/lib/ruby/1.9.1/open-uri.rb:775: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:677:in `open'
	from /usr/lib/ruby/1.9.1/open-uri.rb:33:in `open'
	from prog.rb:2:in `block in <main>'
	from prog.rb:2:in `map'
	from prog.rb:2:in `<main>'