I used cucumber for the first time with rails 3.
Gemfile
group :test do gem \"rspec\" gem \"rspec-rails\" gem \"database_cleaner\" gem \"spork\" gem
Try using cucumber features or simply cucumber instead of rake cucumber.
cucumber features
cucumber
rake cucumber
Try with putting this file features/support/minitest_disable.rb the following code:
require 'multi_test' MultiTest.disable_autorun
and see this discussion in cucumber project