Looks like database_cleaner is not compatible with the newest beta version of mongoid ``` undefined method `remove_all' for #<Mongo::Collection::View:0x00000006771220> (NoMethodError) /home/ubuntu/myapp/vendor/bundle/ruby/2.2.0/gems/database_cleaner-1.4.1/lib/database_cleaner/moped/truncation_base.rb:14:in `block in clean' /home/ubuntu/myapp/vendor/bundle/ruby/2.2.0/gems/database_cleaner-1.4.1/lib/database_cleaner/moped/truncation_base.rb:14:in `each' /home/ubuntu/myapp/vendor/bundle/ruby/2.2.0/gems/database_cleaner-1.4.1/lib/database_cleaner/moped/truncation_base.rb:14:in `clean' /home/ubuntu/myapp/vendor/bundle/ruby/2.2.0/gems/database_cleaner-1.4.1/lib/database_cleaner/base.rb:86:in `clean' /home/ubuntu/myapp/vendor/bundle/ruby/2.2.0/gems/database_cleaner-1.4.1/lib/database_cleaner/configuration.rb:79:in `block in clean' /home/ubuntu/myapp/vendor/bundle/ruby/2.2.0/gems/database_cleaner-1.4.1/lib/database_cleaner/configuration.rb:79:in `each' /home/ubuntu/myapp/vendor/bundle/ruby/2.2.0/gems/database_cleaner-1.4.1/lib/database_cleaner/configuration.rb:79:in `clean' /home/ubuntu/myapp/vendor/bundle/ruby/2.2.0/gems/cucumber-rails-1.4.2/lib/cucumber/rails/hooks/database_cleaner.rb:9:in `After' ```