How do I fix this gem dependency problem in Rails 3 (bundler)? - ruby-on-rails

Question

For some reason, my project has messed up and now its throwing errors every time I try to run bundle install. Somem of the errors i've managed to fix by reordering the gems in my Gemfile, but now i'm getting this one:
Bundler could not find compatible versions for gem "faraday":
In Gemfile:
omniauth depends on
faraday (~> 0.7.3)
twitter depends on
faraday (0.6.1)
I thought that using bundler was supposed to erase dependency wtf's? I'm assumingn this message means that two gems want 2 different versions of faraday..?
How can I fix this problem though? Why doesn't it just install both versions, and each gem loads the version it wants?
I'd love some help on this please!
Thanks
Gemfile.lock:
https://gist.github.com/1061722
Gemfile:
# Edit this Gemfile to bundle your application's dependencies.
source 'http://rubygems.org'
gem 'rails', '3.0.9' #, :git => 'git://github.com/rails/rails.git'
gem "haml-rails"
gem "jquery-rails"
# Gem to abstract away the dplication common in standard restful controllers
gem 'inherited_resources'
# Allows us to keep an order of a user's items in their collection
gem "acts_as_list"
# Used to simplify user registrations and logins
# Pined to ref, as there is problem on devise HEAD
gem "devise", :git => "git://github.com/plataformatec/devise.git", :ref => '4964f53a42a3d434ee6d731d6f999d8dae13dada'
# Might not be used
gem "ajaxful_rating"
# Facilitates Edit-in-place functionality for certain data fields
gem "best_in_place", :git => 'git://github.com/moabite/best_in_place.git'
# Gem for uploading images. More flexible than "paperclip"
gem "carrierwave", :git => 'git://github.com/jnicklas/carrierwave.git'
gem "fog"
# Apparently needed to make the uploadify multifile uploader work
gem "flash_cookie_session"
# Used to that we can resize images uploaded through carrierwave, using
# ImageMagick
gem "rmagick"
# Easily create database models for site simulation
gem "factory_girl_rails"
# Useful for fake data generation
gem "faker"
gem "randexp"
gem "random_data"
gem 'forgery'
gem "lorempixum", :require => 'lorempixum'
gem "hashie"
# gem 'aws-s3', :require => 'aws/s3'
# gem 'bcrypt-ruby', :require => 'bcrypt'
# Provides a shorter syntax for building forms
gem 'formtastic'
# Sends notifications of errors on Production app
gem "hoptoad_notifier"
# Social Media Gems FB Connect, FB, and Twitter
gem "omniauth", :git => "git://github.com/intridea/omniauth.git" ,:ref => "b9fe79961ab56041dbf9"
gem "fb_graph"
gem "twitter"
gem 'rake', '0.8.7'
gem "jammit"
gem "rest-client"
gem 'rails-erd', :git => "git://github.com/voormedia/rails-erd.git"
gem "nokogiri"
group :development, :test do
gem "guard"
gem "guard-ego"
gem "guard-bundler"
gem "guard-jammit"
gem "guard-rails"
gem "guard-rspec"
gem "guard-shell"
gem "guard-compass"
gem "guard-livereload"
gem 'rb-fsevent', :require => false
gem "rb-inotify", :require => false
gem "libnotify", :require => false
# Needed to run html2haml to convert html to haml
gem "hpricot"
gem "taps"
gem "heroku"
#gem "heroku-rails", :git => "git://github.com/railsjedi/heroku-rails.git"
gem "heroku-rails", :git => "git://github.com/sid137/heroku-rails.git"
gem "sqlite3-ruby", :require => 'sqlite3'
gem "ruby-debug19", :require => 'ruby-debug'
# nice table displays in Rails console
gem "hirb"
gem "facebook_test_users", :git => "git://github.com/sid137/facebook_test_users.git"
# Allows us to push the local development database up to Heroku, and pull the
# heroku db down locally
gem "yaml_db"
gem "escape_utils"
# Sass and Blueprint based css framework for dev machine
# use "compass compile . " to compile css before deployment
gem "compass", ">=0.11.1"
# Print a header in app/model/*.rb files, listing the db columns present for
# each model
gem "selenium-webdriver"
gem "rack-test"
gem "capybara", :require => 'capybara/rspec'
gem "launchy"
gem 'database_cleaner', :git => 'git://github.com/bmabey/database_cleaner.git'
gem "rspec-core", "2.6.4"
gem "rspec-rails"# , '2.6.0' #, '2.5.0'
#gem 'shoulda-matchers', :git => 'git://github.com/thoughtbot/shoulda-matchers.git'
#gem 'shoulda-matchers', :git => 'git://github.com/sid137/shoulda-matchers.git'
gem "ZenTest"
gem "autotest-rails"
end

Answer 1

The specific version of Omniauth that you're using depends on Faraday ~> 0.7.3, while the latest released version of Twitter gem needs 0.6.
You can fix this by using the latest version of Twitter gem from the repository.
gem 'twitter', :git => 'https://github.com/jnunemaker/twitter.git'

Answer 2

I had the exact same issue and it got resolved by the following two lines in my Gemfile:
gem 'twitter', :git => 'https://github.com/jnunemaker/twitter.git'
gem 'omniauth', :git => "git://github.com/intridea/omniauth.git" ,:ref => "b9fe79961ab56041dbf9"

Answer 3

try deleting your Gemfile.lock (file) and then do
bundle install