Bundler won't let me install gems

Question

I'm trying to eliminate these annoying DEPRECATION WARNINGS whenever I try to run rspec tests (I'm trudging through the Rails tutorial).

I tried following the suggestion here: rspec triggers "DEPRECATION WARNING: The InstanceMethods module inside ActiveSupport::Concern will be no longer included automatically." to simply update my versions of rspec.

However, whenever tried that, I would end up with a message like this:

The bundle currently has rspec-core locked at 2.1.0.
Try running `bundle update rspec-core`

or this:

Bundler could not find compatible versions for gem "rspec-core":
  In Gemfile:
    rspec-rails (= 2.1.0) x86-mingw32 depends on
      rspec-core (~> 2.1.0) x86-mingw32

    rspec-core (2.10.1)

Finally, I just went ahead and hit bundle install to update ALL my gems. However, that produced the wonderful result of not updating those rspec's. What's going on? (And I've been updating my commits to my current git branch along the way.)

Thank you.

Edit: Here is what my gemfile and gemfile.lock look like:

source 'https://rubygems.org'

gem 'rails', '3.2.1'

group :development, :test do
    gem 'sqlite3', '1.3.5'
    gem 'rspec-rails', '2.1.0' #NOTICE: possible error with rails version
end

group :assets do
  gem 'sass-rails',   '~> 3.2.5'
  gem 'coffee-rails', '~> 3.2.2'    
  gem 'uglifier', '1.2.3'
end

gem 'jquery-rails', '2.0.2'

group :test do
  gem 'capybara', '1.1.2'
end

group :production do
  gem 'pg', '0.12.2'
end

And my gemfile.lock:

GEM
  remote: https://rubygems.org/
  specs:
    actionmailer (3.2.1)
      actionpack (= 3.2.1)
      mail (~> 2.4.0)
    actionpack (3.2.1)
      activemodel (= 3.2.1)
      activesupport (= 3.2.1)
      builder (~> 3.0.0)
      erubis (~> 2.7.0)
      journey (~> 1.0.1)
      rack (~> 1.4.0)
      rack-cache (~> 1.1)
      rack-test (~> 0.6.1)
      sprockets (~> 2.1.2)
    activemodel (3.2.1)
      activesupport (= 3.2.1)
      builder (~> 3.0.0)
    activerecord (3.2.1)
      activemodel (= 3.2.1)
      activesupport (= 3.2.1)
      arel (~> 3.0.0)
      tzinfo (~> 0.3.29)
    activeresource (3.2.1)
      activemodel (= 3.2.1)
      activesupport (= 3.2.1)
    activesupport (3.2.1)
      i18n (~> 0.6)
      multi_json (~> 1.0)
    arel (3.0.2)
    builder (3.0.4)
    capybara (1.1.2)
      mime-types (>= 1.16)
      nokogiri (>= 1.3.3)
      rack (>= 1.0.0)
      rack-test (>= 0.5.4)
      selenium-webdriver (~> 2.0)
      xpath (~> 0.1.4)
    childprocess (0.3.7)
      ffi (~> 1.0, >= 1.0.6)
    coffee-rails (3.2.2)
      coffee-script (>= 2.2.0)
      railties (~> 3.2.0)
    coffee-script (2.2.0)
      coffee-script-source
      execjs
    coffee-script-source (1.4.0)
    diff-lcs (1.1.3)
    erubis (2.7.0)
    execjs (1.4.0)
      multi_json (~> 1.0)
    ffi (1.3.1-x86-mingw32)
    hike (1.2.1)
    i18n (0.6.1)
    journey (1.0.4)
    jquery-rails (2.0.2)
      railties (>= 3.2.0, < 5.0)
      thor (~> 0.14)
    json (1.7.6)
    mail (2.4.4)
      i18n (>= 0.4.0)
      mime-types (~> 1.16)
      treetop (~> 1.4.8)
    mime-types (1.20.1)
    multi_json (1.5.0)
    nokogiri (1.5.6-x86-mingw32)
    pg (0.12.2-x86-mingw32)
    polyglot (0.3.3)
    rack (1.4.4)
    rack-cache (1.2)
      rack (>= 0.4)
    rack-ssl (1.3.3)
      rack
    rack-test (0.6.2)
      rack (>= 1.0)
    rails (3.2.1)
      actionmailer (= 3.2.1)
      actionpack (= 3.2.1)
      activerecord (= 3.2.1)
      activeresource (= 3.2.1)
      activesupport (= 3.2.1)
      bundler (~> 1.0)
      railties (= 3.2.1)
    railties (3.2.1)
      actionpack (= 3.2.1)
      activesupport (= 3.2.1)
      rack-ssl (~> 1.3.2)
      rake (>= 0.8.7)
      rdoc (~> 3.4)
      thor (~> 0.14.6)
    rake (10.0.3)
    rdoc (3.12.1)
      json (~> 1.4)
    rspec (2.1.0)
      rspec-core (~> 2.1.0)
      rspec-expectations (~> 2.1.0)
      rspec-mocks (~> 2.1.0)
    rspec-core (2.1.0)
    rspec-expectations (2.1.0)
      diff-lcs (~> 1.1.2)
    rspec-mocks (2.1.0)
    rspec-rails (2.1.0)
      rspec (~> 2.1.0)
    rubyzip (0.9.9)
    sass (3.2.5)
    sass-rails (3.2.6)
      railties (~> 3.2.0)
      sass (>= 3.1.10)
      tilt (~> 1.3)
    selenium-webdriver (2.29.0)
      childprocess (>= 0.2.5)
      multi_json (~> 1.0)
      rubyzip
      websocket (~> 1.0.4)
    sprockets (2.1.3)
      hike (~> 1.2)
      rack (~> 1.0)
      tilt (~> 1.1, != 1.3.0)
    sqlite3 (1.3.5-x86-mingw32)
    thor (0.14.6)
    tilt (1.3.3)
    treetop (1.4.12)
      polyglot
      polyglot (>= 0.3.1)
    tzinfo (0.3.35)
    uglifier (1.2.3)
      execjs (>= 0.3.0)
      multi_json (>= 1.0.2)
    websocket (1.0.7)
    xpath (0.1.4)
      nokogiri (~> 1.3)

PLATFORMS
  x86-mingw32

DEPENDENCIES
  capybara (= 1.1.2)
  coffee-rails (~> 3.2.2)
  jquery-rails (= 2.0.2)
  pg (= 0.12.2)
  rails (= 3.2.1)
  rspec-rails (= 2.1.0)
  sass-rails (~> 3.2.5)
  sqlite3 (= 1.3.5)
  uglifier (= 1.2.3)

Answer 1

I think your problem here that you need to simply do the following

sudo gem uninstall rspec-core -v 2.2.1
bundle update rspec-core

This maybe required for other dependent gems like (rspec-rails, rspec)

Check this by by doing gem list rspec