RSpec running error - ruby-on-rails

Question

Doing my first RSpec test and getting an error when I run:
rspec spec/features/list_movies_spec.rb
error message:
/Users/waymond/.rvm/gems/ruby-2.0.0-p247/gems/bundler-1.5.1/lib/bundler/runtime.rb:34:in block in setup': You have already activated rspec-core 2.14.7, but your Gemfile requires rspec-core 2.13.1. Prependingbundle exec` to your command may solve this. (Gem::LoadError)
In my Gemfile.lock, I noticed that there were 2 rspec-core's in there and one was 2.13.0, which might be the problem. Any help on how to go about fixing this is much appreciated. Thank you! Here is my Gemfile:
source 'https://rubygems.org'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.0.2'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 1.2'
group :doc do
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', require: false
end
# Use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.1.2'
# Use unicorn as the app server
# gem 'unicorn'
# Use Capistrano for deployment
# gem 'capistrano', group: :development
# Use debugger
# gem 'debugger', group: [:development, :test]
group :test, :development do
gem "rspec-rails", "~> 2.13.1"
end
group :test do
gem "capybara", "2.1.0"
end
and my Gemfile.lock:
GEM
remote: https://rubygems.org/
specs:
actionmailer (4.0.2)
actionpack (= 4.0.2)
mail (~> 2.5.4)
actionpack (4.0.2)
activesupport (= 4.0.2)
builder (~> 3.1.0)
erubis (~> 2.7.0)
rack (~> 1.5.2)
rack-test (~> 0.6.2)
activemodel (4.0.2)
activesupport (= 4.0.2)
builder (~> 3.1.0)
activerecord (4.0.2)
activemodel (= 4.0.2)
activerecord-deprecated_finders (~> 1.0.2)
activesupport (= 4.0.2)
arel (~> 4.0.0)
activerecord-deprecated_finders (1.0.3)
activesupport (4.0.2)
i18n (~> 0.6, >= 0.6.4)
minitest (~> 4.2)
multi_json (~> 1.3)
thread_safe (~> 0.1)
tzinfo (~> 0.3.37)
arel (4.0.1)
atomic (1.1.14)
builder (3.1.4)
capybara (2.1.0)
mime-types (>= 1.16)
nokogiri (>= 1.3.3)
rack (>= 1.0.0)
rack-test (>= 0.5.4)
xpath (~> 2.0)
coffee-rails (4.0.1)
coffee-script (>= 2.2.0)
railties (>= 4.0.0, < 5.0)
coffee-script (2.2.0)
coffee-script-source
execjs
coffee-script-source (1.6.3)
diff-lcs (1.2.5)
erubis (2.7.0)
execjs (2.0.2)
hike (1.2.3)
i18n (0.6.9)
jbuilder (1.5.3)
activesupport (>= 3.0.0)
multi_json (>= 1.2.0)
jquery-rails (3.0.4)
railties (>= 3.0, < 5.0)
thor (>= 0.14, < 2.0)
json (1.8.1)
mail (2.5.4)
mime-types (~> 1.16)
treetop (~> 1.4.8)
mime-types (1.25.1)
mini_portile (0.5.2)
minitest (4.7.5)
multi_json (1.8.2)
nokogiri (1.6.1)
mini_portile (~> 0.5.0)
polyglot (0.3.3)
rack (1.5.2)
rack-test (0.6.2)
rack (>= 1.0)
rails (4.0.2)
actionmailer (= 4.0.2)
actionpack (= 4.0.2)
activerecord (= 4.0.2)
activesupport (= 4.0.2)
bundler (>= 1.3.0, < 2.0)
railties (= 4.0.2)
sprockets-rails (~> 2.0.0)
railties (4.0.2)
actionpack (= 4.0.2)
activesupport (= 4.0.2)
rake (>= 0.8.7)
thor (>= 0.18.1, < 2.0)
rake (10.1.1)
rdoc (3.12.2)
json (~> 1.4)
rspec-core (2.13.1)
rspec-expectations (2.13.0)
diff-lcs (>= 1.1.3, < 2.0)
rspec-mocks (2.13.1)
rspec-rails (2.13.1)
actionpack (>= 3.0)
activesupport (>= 3.0)
railties (>= 3.0)
rspec-core (~> 2.13.0)
rspec-expectations (~> 2.13.0)
rspec-mocks (~> 2.13.0)
sass (3.2.13)
sass-rails (4.0.1)
railties (>= 4.0.0, < 5.0)
sass (>= 3.1.10)
sprockets-rails (~> 2.0.0)
sdoc (0.3.20)
json (>= 1.1.3)
rdoc (~> 3.10)
sprockets (2.10.1)
hike (~> 1.2)
multi_json (~> 1.0)
rack (~> 1.0)
tilt (~> 1.1, != 1.3.0)
sprockets-rails (2.0.1)
actionpack (>= 3.0)
activesupport (>= 3.0)
sprockets (~> 2.8)
sqlite3 (1.3.8)
thor (0.18.1)
thread_safe (0.1.3)
atomic
tilt (1.4.1)
treetop (1.4.15)
polyglot
polyglot (>= 0.3.1)
turbolinks (2.1.0)
coffee-rails
tzinfo (0.3.38)
uglifier (2.4.0)
execjs (>= 0.3.0)
json (>= 1.8.0)
xpath (2.0.0)
nokogiri (~> 1.3)
PLATFORMS
ruby
DEPENDENCIES
capybara (= 2.1.0)
coffee-rails (~> 4.0.0)
jbuilder (~> 1.2)
jquery-rails
rails (= 4.0.2)
rspec-rails (~> 2.13.1)
sass-rails (~> 4.0.0)
sdoc
sqlite3
turbolinks
uglifier (>= 1.3.0)

Answer 1

Run the spec using
$ bundle exec rspec spec/features/list_movies_spec.rb
This will ensure the command is executed with the same version listed in your Gemfile.
It's likely you have more than one rspec versions installed on the system. Using rspec command directly will load the latest, but this conflicts with the version listed in your Gemfile.
Other possible solutions are:
uninstall all versions except the one listed in the Gemfile
upgrade the rspec version in the Gemfile

Answer 2

I solved a similar issue by using a different RVM gemset.
I created a new gemset just for this Rails app and then ran bundle install. Then everything worked properly.
$ rvm gemset create app_name_here
$ rvm gemset use app_name_here
$ bundle install