Bundler ne pouvait pas trouver des versions compatibles pour gem “nokogiri”

Je pousse une application rails de appfog, mais j'ai reçu message d'erreur suivant:

/var/vcap.local/dea/apps/superbe-0-dc92a2e492e46c40c06d2abc3ad59841/app/rubygems
rubis/1.9.1/gems/bundler-1.1.3/lib/bundler/résolveur.rb:129:dans " le bloc dans
résoudre' Bundler ne pouvait pas trouver des versions compatibles pour gem
"nokogiri": (Bundler::Versi nConflict) Dans le cliché (Gemfile.lock):
nokogiri (1.5.6) Dans le Gemfile:
le capybara (= 1.1.2) ruby dépend
nokogiri (>= 1.3.3) ruby

De course bundle update va reconstruire votre capture d'écran à partir de zéro, en utilisant
seules les gemmes dans votre Gemfile, ce qui peut résoudre le conflit.

et mon Gemfile:

source 'https://rubygems.org'

gem 'rails', '3.2.12'
gem 'mysql2'
gem 'pg'
gem 'thin'
gem 'sqlite3'

group :development, :test do
  gem 'rspec-rails', '2.11.0'
end

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '3.2.5'
  gem 'coffee-rails', '3.2.2'
  gem 'uglifier', '1.2.3'
end

gem 'jquery-rails', '2.0.2'

group :test do
  gem 'capybara', '1.1.2'
end

Comment résoudre le problème?

modifier：
ajouter Gemfile.verrouillage

    GEM
remote: https://rubygems.org/
specs:
actionmailer (3.2.12)
actionpack (= 3.2.12)
mail (~> 2.4.4)
actionpack (3.2.12)
activemodel (= 3.2.12)
activesupport (= 3.2.12)
builder (~> 3.0.0)
erubis (~> 2.7.0)
journey (~> 1.0.4)
rack (~> 1.4.5)
rack-cache (~> 1.2)
rack-test (~> 0.6.1)
sprockets (~> 2.2.1)
activemodel (3.2.12)
activesupport (= 3.2.12)
builder (~> 3.0.0)
activerecord (3.2.12)
activemodel (= 3.2.12)
activesupport (= 3.2.12)
arel (~> 3.0.2)
tzinfo (~> 0.3.29)
activeresource (3.2.12)
activemodel (= 3.2.12)
activesupport (= 3.2.12)
activesupport (3.2.12)
i18n (~> 0.6)
multi_json (~> 1.0)
arel (3.0.2)
builder (3.0.4)
capybara (1.1.2)
mime-types (>= 1.16)
nokogiri (>= 1.3.3)
rack (>= 1.0.0)
rack-test (>= 0.5.4)
selenium-webdriver (~> 2.0)
xpath (~> 0.1.4)
childprocess (0.3.8)
ffi (~> 1.0, >= 1.0.11)
coffee-rails (3.2.2)
coffee-script (>= 2.2.0)
railties (~> 3.2.0)
coffee-script (2.2.0)
coffee-script-source
execjs
coffee-script-source (1.5.0)
daemons (1.1.9)
diff-lcs (1.1.3)
erubis (2.7.0)
eventmachine (1.0.1-x86-mingw32)
execjs (1.4.0)
multi_json (~> 1.0)
ffi (1.4.0-x86-mingw32)
hike (1.2.1)
i18n (0.6.4)
journey (1.0.4)
jquery-rails (2.0.2)
railties (>= 3.2.0, < 5.0)
thor (~> 0.14)
json (1.7.7)
mail (2.4.4)
i18n (>= 0.4.0)
mime-types (~> 1.16)
treetop (~> 1.4.8)
mime-types (1.21)
multi_json (1.6.1)
mysql2 (0.3.11-x86-mingw32)
nokogiri (1.5.6-x86-mingw32)
pg (0.14.1-x86-mingw32)
polyglot (0.3.3)
rack (1.4.5)
rack-cache (1.2)
rack (>= 0.4)
rack-ssl (1.3.3)
rack
rack-test (0.6.2)
rack (>= 1.0)
rails (3.2.12)
actionmailer (= 3.2.12)
actionpack (= 3.2.12)
activerecord (= 3.2.12)
activeresource (= 3.2.12)
activesupport (= 3.2.12)
bundler (~> 1.0)
railties (= 3.2.12)
railties (3.2.12)
actionpack (= 3.2.12)
activesupport (= 3.2.12)
rack-ssl (~> 1.3.2)
rake (>= 0.8.7)
rdoc (~> 3.4)
thor (>= 0.14.6, < 2.0)
rake (10.0.3)
rdoc (3.12.2)
json (~> 1.4)
rspec (2.11.0)
rspec-core (~> 2.11.0)
rspec-expectations (~> 2.11.0)
rspec-mocks (~> 2.11.0)
rspec-core (2.11.1)
rspec-expectations (2.11.3)
diff-lcs (~> 1.1.3)
rspec-mocks (2.11.3)
rspec-rails (2.11.0)
actionpack (>= 3.0)
activesupport (>= 3.0)
railties (>= 3.0)
rspec (~> 2.11.0)
rubyzip (0.9.9)
sass (3.2.6)
sass-rails (3.2.5)
railties (~> 3.2.0)
sass (>= 3.1.10)
tilt (~> 1.3)
selenium-webdriver (2.30.0)
childprocess (>= 0.2.5)
multi_json (~> 1.0)
rubyzip
websocket (~> 1.0.4)
sprockets (2.2.2)
hike (~> 1.2)
multi_json (~> 1.0)
rack (~> 1.0)
tilt (~> 1.1, != 1.3.0)
sqlite3 (1.3.7-x86-mingw32)
thin (1.5.0)
daemons (>= 1.0.9)
eventmachine (>= 0.12.6)
rack (>= 1.0.0)
thor (0.17.0)
tilt (1.3.3)
treetop (1.4.12)
polyglot
polyglot (>= 0.3.1)
tzinfo (0.3.35)
uglifier (1.2.3)
execjs (>= 0.3.0)
multi_json (>= 1.0.2)
websocket (1.0.7)
xpath (0.1.4)
nokogiri (~> 1.3)
PLATFORMS
x86-mingw32
DEPENDENCIES
capybara (= 1.1.2)
coffee-rails (= 3.2.2)
jquery-rails (= 2.0.2)
mysql2
pg
rails (= 3.2.12)
rspec-rails (= 2.11.0)
sass-rails (= 3.2.5)
sqlite3
thin
uglifier (= 1.2.3)