This page contains fixes to known problems encountered from building the developer site, and how they were fixed. This may help you if you have the same problems.
Error
An error occurred while installing nokogiri (1.6.7.2), and Bundler cannot continue. Make sure that
gem install nokogiri -v '1.6.7.2'succeeds before bundling.
Solution
gem install nokogiri -- --use-system-libraries