I ran into same issues and for me the resolution was very simple. Just remove the cached gem file for the gem and try reinstalling.
Example in above case it should be "rm /home/usr/.rbenv/versions/2.2. 3/lib/ruby/gems/2.2.0/cache/nokogiri-1.6.7.1.gem" Thanks. regards, Sur -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscr...@googlegroups.com. To post to this group, send email to rubyonrails-talk@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/bf4377cd-1dcd-4482-b52b-69a1f6cdbc92%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
