Проблема обновления Rails с 3.2.2.5 до 4.0.0.12

Question

Я пытаюсь обновить Rails с версии 3.2.22.5 до версии 4.0.12. К сожалению, пока безуспешно. Кажется, что проблема в простой форме, но обновление до новых версий также мало что меняет. Заявка не написана мной. Любая помощь будет принята с благодарностью. Заранее спасибо.

Я пробовал разные версии гема Simple Form, но пока безуспешно.

Мой гемфайл:

source 'https://rubygems.org'

ruby '2.2.10'
gem 'rails', '4.0.12'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

gem 'pg', '0.21'
gem 'carrierwave'
gem 'devise', '~> 3.4', '>= 3.4.1'
gem 'mini_magick'
gem 'nazca', '~> 0.2.0'
gem 'whenever'
gem 'quiet_assets', '~> 1.0', '>= 1.0.3'
gem 'polish'
gem 'simple_form', '~> 2.1', '>= 2.1.3'
gem "nokogiri", "1.5.11"
gem "rails_autolink"

gem "capistrano"
gem "capistrano-ext"
gem "capistrano_colors"
gem "rvm-capistrano", require: false

gem "therubyracer"
gem 'cells', '~> 3.11', '>= 3.11.3'

gem "omniauth-facebook"
gem "koala"
gem "awesome_print"

gem 'airbrake'

gem 'ransack', '~> 1.5', '>= 1.5.1'
gem 'kaminari'
gem 'kaminari-bootstrap'
gem 'puma'
gem 'rails4_upgrade', github: 'alindeman/rails4_upgrade'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'

  # See https://github.com/sstephenson/execjs#readme for more supported runtimes
  # gem 'therubyracer', :platforms => :ruby

  gem 'uglifier', '>= 1.0.3'

end

group :development, :test do
  gem 'letter_opener', "1.1.0"
  gem 'rspec-rails'
  gem 'factory_girl_rails'
  gem 'capybara'
  gem 'phantomjs'

  gem 'guard'
  gem 'guard-spork'
  gem 'guard-rspec'
  gem 'guard-passenger'
  gem 'guard-pow'
  gem "spork", '~> 1.0.0.rc'
  gem 'spork-rails', '~> 4.0'
  gem "rb-fsevent"
end

gem 'jquery-rails'
gem 'test-unit'



gem 'rails_12factor', group: :production

gem "fog", "~> 1.29.0"
gem "figaro"
gem "rollbar"

Вот ошибка, которую я вижу:

Bundler could not find compatible versions for gem "actionpack":
  In Gemfile:
    rails (= 4.0.12) was resolved to 4.0.12, which depends on
      actionpack (= 4.0.12)

    simple_form (~> 2.1, >= 2.1.3) was resolved to 2.1.3, which depends on
      actionpack (~> 3.0)

Bundler could not find compatible versions for gem "rails":
  In Gemfile:
    rails (= 4.0.12)

    kaminari-bootstrap was resolved to 0.1.3, which depends on
      rails

    nazca (~> 0.2.0) was resolved to 0.2.0, which depends on
      rails (>= 3.0)

    rails_autolink was resolved to 1.1.0, which depends on
      rails (> 3.1)

    spork-rails (~> 4.0) was resolved to 4.0.0, which depends on
      rails (>= 3.0.0, < 5)

РЕДАКТИРОВАТЬ: После изменения простой формы Gem до версии 3.1 и пытается объединить, я вижу ошибку:

Bundler could not find compatible versions for gem "actionpack":
  In Gemfile:
    cells (~> 3.11, >= 3.11.3) was resolved to 3.11.3, which depends on
      actionpack (>= 3.0)

    rails (= 4.0.12) was resolved to 4.0.12, which depends on
      actionpack (= 4.0.12)

    ransack (~> 1.5, >= 1.5.1) was resolved to 1.8.10, which depends on
      actionpack (>= 3.0, < 5.2)

    simple_form (~> 3.1) was resolved to 3.5.1, which depends on
      actionpack (> 4, < 5.2)

Bundler could not find compatible versions for gem "activerecord":
  In Gemfile:
    rails (= 4.0.12) was resolved to 4.0.12, which depends on
      activerecord (= 4.0.12)

    ransack (~> 1.5, >= 1.5.1) was resolved to 1.8.10, which depends on
      activerecord (>= 3.0, < 5.2)

Bundler could not find compatible versions for gem "activesupport":
  In Gemfile:
    carrierwave was resolved to 1.3.1, which depends on
      activesupport (>= 4.0.0)

    rails (= 4.0.12) was resolved to 4.0.12, which depends on
      activesupport (= 4.0.12)

    ransack (~> 1.5, >= 1.5.1) was resolved to 1.8.10, which depends on
      activesupport (>= 3.0, < 5.2)

    rspec-rails was resolved to 3.9.0, which depends on
      activesupport (>= 3.0)

Bundler could not find compatible versions for gem "capistrano":
  In Gemfile:
    capistrano

    capistrano-ext was resolved to 1.2.1, which depends on
      capistrano (>= 1.0.0)

    rvm-capistrano was resolved to 1.5.6, which depends on
      capistrano (~> 2.15.4)

Bundler could not find compatible versions for gem "kaminari":
  In Gemfile:
    kaminari

    kaminari-bootstrap was resolved to 3.0.1, which depends on
      kaminari (>= 0.13.0)

Bundler could not find compatible versions for gem "nokogiri":
  In Gemfile:
    nokogiri (= 1.5.11)

    capybara was resolved to 2.18.0, which depends on
      nokogiri (>= 1.3.3)

    fog (~> 1.29.0) was resolved to 1.29.0, which depends on
      nokogiri (~> 1.5, >= 1.5.11)

Bundler could not find compatible versions for gem "rails":
  In Gemfile:
    rails (= 4.0.12)

    kaminari-bootstrap was resolved to 3.0.1, which depends on
      rails

    nazca (~> 0.2.0) was resolved to 0.2.0, which depends on
      rails (>= 3.0)

    rails_autolink was resolved to 1.1.6, which depends on
      rails (> 3.1)

    spork-rails (~> 4.0) was resolved to 4.0.0, which depends on
      rails (>= 3.0.0, < 5)

Bundler could not find compatible versions for gem "railties":
  In Gemfile:
    rails (= 4.0.12) was resolved to 4.0.12, which depends on
      railties (= 4.0.12)

    sass-rails (~> 3.2.3) was resolved to 3.2.3, which depends on
      railties (~> 3.2.0.beta)

Bundler could not find compatible versions for gem "ruby":
  In Gemfile:
    ruby (~> 2.2.10.0)

    capybara was resolved to 3.15.1, which depends on
      ruby (>= 2.3.0)