Ruby env with failing spec

app-models-user.rb

class User
  include Mongoid::Document
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  ## Database authenticatable
  field :email,              :type => String, :default => ""
  field :encrypted_password, :type => String, :default => ""

  ## Recoverable
  field :reset_password_token,   :type => String
  field :reset_password_sent_at, :type => Time

  ## Rememberable
  field :remember_created_at, :type => Time

  ## Trackable
  field :sign_in_count,      :type => Integer, :default => 0
  field :current_sign_in_at, :type => Time
  field :last_sign_in_at,    :type => Time
  field :current_sign_in_ip, :type => String
  field :last_sign_in_ip,    :type => String

  ## Confirmable
  # field :confirmation_token,   :type => String
  # field :confirmed_at,         :type => Time
  # field :confirmation_sent_at, :type => Time
  # field :unconfirmed_email,    :type => String # Only if using reconfirmable

  ## Lockable
  # field :failed_attempts, :type => Integer, :default => 0 # Only if lock strategy is :failed_attempts
  # field :unlock_token,    :type => String # Only if unlock strategy is :email or :both
  # field :locked_at,       :type => Time
end

factories-users.rb

FactoryGirl.define do
  factory :user do
  	email 'test@test.com'
  	password 'testing'
  	password_confirmation 'testing'
  end
end

Gemfile

source 'https://rubygems.org'

#system

gem 'rails', '4.0.1'
gem 'mongoid', github: 'mongoid/mongoid'

#admin
gem 'devise', github: 'plataformatec/devise'

#sass
gem 'sass-rails', '~> 4.0.0'
gem 'compass-rails'
gem 'font-awesome-sass'

#js
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.0.0'
gem 'jquery-rails'
gem 'jbuilder', '~> 1.2'

#html
gem 'turbolinks'
gem 'slim'

#markdown transformations
gem 'redcarpet'
gem 'github-markdown'

#image uploads
gem 'mongoid-paperclip', :require => 'mongoid_paperclip', :github => 'meskyanichi/mongoid-paperclip'
gem 'aws-sdk', '~> 1.3.4', :require => 'aws-sdk'
gem 'fog'
gem 'unf'

group :development, :test do
	gem 'rspec'
	gem 'rspec-rails'
	gem 'guard-rspec'

	gem 'spork', '>= 1.0rc0'
	gem 'spork-rails', github: 'A-gen/spork-rails'
	gem 'guard-spork'
	
	gem 'database_cleaner'
	gem 'factory_girl_rails'
	gem 'shoulda-matchers'
end

spec_helper.rb

require 'rubygems'
require 'spork'
require 'factory_girl'

Spork.prefork do
  # This file is copied to spec/ when you run 'rails generate rspec:install'
  ENV["RAILS_ENV"] ||= 'test'
  require File.expand_path("../../config/environment", __FILE__)
  require 'rspec/rails'
  require 'rspec/autorun'

  Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }

  RSpec.configure do |config|
    config.infer_base_class_for_anonymous_controllers = false
    config.order = "random"
    config.expect_with :stdlib
    config.before(:suite) do
      DatabaseCleaner[:mongoid].strategy = :truncation
      DatabaseCleaner[:mongoid].clean_with(:truncation)
    end

    config.before(:each) do
      DatabaseCleaner.start
    end

    config.after(:each) do
      DatabaseCleaner.clean
    end
  end

end

Spork.each_run do
  # This code will be run each time you run your specs.

end

user_spec.rb

require 'spec_helper'

describe User do
  before { @user = FactoryGirl.create(:user) }

  it "should have an email" do
  	@user.should respond_to(:email)
  end

end

The error I get is:

"undefined method 'respond_to' for #Rspec::Core::ExampleGroup::Nested_3:0x000...