$ bundle install Gem files will remain installed in /home/websites/test.shukuba.net/vendor/bundle/ruby/1.9.1/gems/nokogiri-1.6.3.1 for inspection. Results logged to /home/websites/test.shukuba.net/vendor/bundle/ruby/1.9.1/extensions/x86_64-linux/1.9.1/nokogiri-1.6.3.1/gem_make.out An error occurred while installing nokogiri (1.6.3.1), and Bundler cannot continue. Make sure that `gem install nokogi