rspec-rails scaffold generation

gistfile1.txt

16:24 $ bundle exec rails g scaffold foo
      invoke  active_record
      create    db/migrate/20150305003051_create_foos.rb
      create    app/models/foo.rb
      invoke    rspec
      create      spec/models/foo_spec.rb
      invoke      factory_girl
      create        spec/factories/foos.rb
      invoke  resource_route
       route    resources :foos
      invoke  scaffold_controller
      create    app/controllers/foos_controller.rb
      invoke    slim
      create      app/views/foos
      create      app/views/foos/index.html.slim
      create      app/views/foos/edit.html.slim
      create      app/views/foos/show.html.slim
      create      app/views/foos/new.html.slim
      create      app/views/foos/_form.html.slim
      invoke    rspec
      create      spec/controllers/foos_controller_spec.rb

(erb):82:in `block in template': undefined local variable or method `example_invalid_attributes' for #<Rspec::Generators::ScaffoldGenerator:0x007fb03e860f38> (NameError)
	from RVM/gems/thor-0.19.1/lib/thor/actions/file_manipulation.rb:305:in `call'
	from RVM/gems/thor-0.19.1/lib/thor/actions/file_manipulation.rb:305:in `block in capture'
	from RVM/gems/thor-0.19.1/lib/thor/actions/file_manipulation.rb:310:in `with_output_buffer'
	from RVM/gems/thor-0.19.1/lib/thor/actions/file_manipulation.rb:305:in `capture'
	from RVM/gems/railties-4.2.0/lib/rails/generators/named_base.rb:43:in `module_namespacing'
	from (erb):3:in `template'
	from ruby-2.0.0-p247/erb.rb:849:in `eval'
	from ruby-2.0.0-p247/erb.rb:849:in `result'
	from RVM/gems/thor-0.19.1/lib/thor/actions/file_manipulation.rb:116:in `block in template'
	from RVM/gems/thor-0.19.1/lib/thor/actions/create_file.rb:53:in `call'
	from RVM/gems/thor-0.19.1/lib/thor/actions/create_file.rb:53:in `render'
	from RVM/gems/thor-0.19.1/lib/thor/actions/create_file.rb:62:in `block (2 levels) in invoke!'
	from RVM/gems/thor-0.19.1/lib/thor/actions/create_file.rb:62:in `open'
	from RVM/gems/thor-0.19.1/lib/thor/actions/create_file.rb:62:in `block in invoke!'
	from RVM/gems/thor-0.19.1/lib/thor/actions/empty_directory.rb:116:in `call'
	from RVM/gems/thor-0.19.1/lib/thor/actions/empty_directory.rb:116:in `invoke_with_conflict_check'
	from RVM/gems/thor-0.19.1/lib/thor/actions/create_file.rb:60:in `invoke!'
	from RVM/gems/thor-0.19.1/lib/thor/actions.rb:94:in `action'
	from RVM/gems/thor-0.19.1/lib/thor/actions/create_file.rb:25:in `create_file'
	from RVM/gems/thor-0.19.1/lib/thor/actions/file_manipulation.rb:115:in `template'
	from RVM/gems/railties-4.2.0/lib/rails/generators/named_base.rb:26:in `block in template'
	from RVM/gems/railties-4.2.0/lib/rails/generators/named_base.rb:60:in `inside_template'
	from RVM/gems/railties-4.2.0/lib/rails/generators/named_base.rb:25:in `template'
	from RVM/gems/rspec-rails-3.2.1/lib/generators/rspec/scaffold/scaffold_generator.rb:29:in `generate_controller_spec'