title: Rails not finding rake-10.5.0
body: <p>I am trying to install the <code>rake</code> gem in rails 4.2.
  Th gem seems to be install fine, but then Rails fails when it tries to run, saying that it cannot see <code>rake-10.5.0</code>.
  I am developing in Rubymine and the error I am getting is below, as is my Gemfile.
  I have tried deleting <code>Gemfile.lock</code> as suggested by other posts, but to no avail.</p>
  
  <p>Console:</p>
  
  <pre><code> ~/Development/RubymineProjects/Revenant.tech    
  ls
  Gemfile     Rakefile    config      lib     test
  Gemfile.lock    app     config.ru   log     tmp
  README.rdoc bin     db      public      vendor
   ~/Development/RubymineProjects/Revenant.tech    
  gem install rack
  Successfully installed rack-1.6.4
  Parsing documentation for rack-1.6.4
  Done installing documentation for rack after 2 seconds
  1 gem installed
   ~/Development/RubymineProjects/Revenant.tech    
  bundle update rake
  Fetching gem metadata from https://rubygems.org/...........
  Fetching version metadata from https://rubygems.org/...
  Fetching dependency metadata from https://rubygems.org/..
  Resolving dependencies...
  Using rake 10.5.0
  Using i18n 0.7.0
  Using json 1.8.3
  Using minitest 5.8.3
  Using thread_safe 0.3.5
  Using builder 3.2.2
  Using erubis 2.7.0
  Using mini_portile2 2.0.0
  Using rack 1.6.4
  Using mime-types 2.99
  Using arel 6.0.3
  Using debug_inspector 0.0.2
  Using bundler 1.11.2
  Using byebug 8.2.1
  Using coffee-script-source 1.10.0
  Using execjs 2.6.0
  Using thor 0.19.1
  Using concurrent-ruby 1.0.0
  Using multi_json 1.11.2
  Using mysql2 0.4.2
  Using sass 3.4.21
  Using tilt 2.0.2
  Using spring 1.6.2
  Using tzinfo 1.2.2
  Using nokogiri 1.6.7.1
  Using rack-test 0.6.3
  Using mail 2.6.3
  Using binding_of_caller 0.7.2
  Using coffee-script 2.4.1
  Using uglifier 2.7.2
  Using sprockets 3.5.2
  Using activesupport 4.2.5
  Using loofah 2.0.3
  Using rails-deprecated_sanitizer 1.0.3
  Using globalid 0.3.6
  Using activemodel 4.2.5
  Using jbuilder 2.4.0
  Using rails-html-sanitizer 1.0.2
  Using rails-dom-testing 1.0.7
  Using activejob 4.2.5
  Using activerecord 4.2.5
  Using actionview 4.2.5
  Using actionpack 4.2.5
  Using actionmailer 4.2.5
  Using railties 4.2.5
  Using sprockets-rails 3.0.0
  Using coffee-rails 4.1.1
  Using jquery-rails 4.1.0
  Using rails 4.2.5
  Using sass-rails 5.0.4
  Using web-console 2.2.1
  Using turbolinks 2.5.3
  Bundle updated!
   ~/Development/RubymineProjects/Revenant.tech    
  rm Gemfile.lock 
   ~/Development/RubymineProjects/Revenant.tech    
  bundle install
  Fetching gem metadata from https://rubygems.org/...........
  Fetching version metadata from https://rubygems.org/...
  Fetching dependency metadata from https://rubygems.org/..
  Resolving dependencies.....
  Using rake 10.5.0
  Using i18n 0.7.0
  Using json 1.8.3
  Using minitest 5.8.3
  Using thread_safe 0.3.5
  Using builder 3.2.2
  Using erubis 2.7.0
  Using mini_portile2 2.0.0
  Using rack 1.6.4
  Using mime-types 2.99
  Using arel 6.0.3
  Using debug_inspector 0.0.2
  Using bundler 1.11.2
  Using byebug 8.2.1
  Using coffee-script-source 1.10.0
  Using execjs 2.6.0
  Using thor 0.19.1
  Using concurrent-ruby 1.0.0
  Using multi_json 1.11.2
  Using mysql2 0.4.2
  Using sass 3.4.21
  Using tilt 2.0.2
  Using spring 1.6.2
  Using tzinfo 1.2.2
  Using nokogiri 1.6.7.1
  Using rack-test 0.6.3
  Using mail 2.6.3
  Using binding_of_caller 0.7.2
  Using coffee-script 2.4.1
  Using uglifier 2.7.2
  Using sprockets 3.5.2
  Using activesupport 4.2.5
  Using loofah 2.0.3
  Using rails-deprecated_sanitizer 1.0.3
  Using globalid 0.3.6
  Using activemodel 4.2.5
  Using jbuilder 2.4.0
  Using rails-html-sanitizer 1.0.2
  Using rails-dom-testing 1.0.7
  Using activejob 4.2.5
  Using activerecord 4.2.5
  Using actionview 4.2.5
  Using actionpack 4.2.5
  Using actionmailer 4.2.5
  Using railties 4.2.5
  Using sprockets-rails 3.0.0
  Using coffee-rails 4.1.1
  Using jquery-rails 4.1.0
  Using rails 4.2.5
  Using sass-rails 5.0.4
  Using web-console 2.2.1
  Using turbolinks 2.5.3
  Bundle complete! 12 Gemfile dependencies, 52 gems now installed.
  Use `bundle show [gemname]` to see where a bundled gem is installed.
   ~/Development/RubymineProjects/Revenant.tech    
  </code></pre>
  
  <p>Rubymine console error:</p>
  
  <pre><code>/usr/bin/ruby -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /Users/richardcurteis/Development/RubymineProjects/Revenant.tech/bin/rails server -b 0.0.0.0 -p 3000 -e development
  /Library/Ruby/Gems/2.0.0/gems/bundler-1.11.2/lib/bundler/spec_set.rb:94:in `block in materialize': Could not find rake-10.5.0 in any of the sources (Bundler::GemNotFound)
      from /Library/Ruby/Gems/2.0.0/gems/bundler-1.11.2/lib/bundler/spec_set.rb:87:in `map!'
      from /Library/Ruby/Gems/2.0.0/gems/bundler-1.11.2/lib/bundler/spec_set.rb:87:in `materialize'
      from /Library/Ruby/Gems/2.0.0/gems/bundler-1.11.2/lib/bundler/definition.rb:137:in `specs'
      from /Library/Ruby/Gems/2.0.0/gems/bundler-1.11.2/lib/bundler/definition.rb:182:in `specs_for'
      from /Library/Ruby/Gems/2.0.0/gems/bundler-1.11.2/lib/bundler/definition.rb:171:in `requested_specs'
      from /Library/Ruby/Gems/2.0.0/gems/bundler-1.11.2/lib/bundler/environment.rb:18:in `requested_specs'
      from /Library/Ruby/Gems/2.0.0/gems/bundler-1.11.2/lib/bundler/runtime.rb:13:in `setup'
      from /Library/Ruby/Gems/2.0.0/gems/bundler-1.11.2/lib/bundler.rb:92:in `setup'
      from /Library/Ruby/Gems/2.0.0/gems/bundler-1.11.2/lib/bundler/setup.rb:18:in `&lt;top (required)&gt;'
      from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:135:in `require'
      from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:135:in `rescue in require'
      from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:144:in `require'
      from /Users/richardcurteis/Development/RubymineProjects/Revenant.tech/config/boot.rb:3:in `&lt;top (required)&gt;'
      from /Users/richardcurteis/Development/RubymineProjects/Revenant.tech/bin/rails:3:in `require_relative'
      from /Users/richardcurteis/Development/RubymineProjects/Revenant.tech/bin/rails:3:in `&lt;top (required)&gt;'
      from -e:1:in `load'
      from -e:1:in `&lt;main&gt;'
  
  Process finished with exit code 1
  </code></pre>
  
  <p>Rakefile:</p>
  
  <pre><code>source 'https://rubygems.org'
  
  
  # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
  gem 'rails', '4.2.5'
  # Use mysql as the database for Active Record
  gem 'mysql2', '&gt;= 0.3.13', '&lt; 0.5'
  # Use SCSS for stylesheets
  gem 'sass-rails', '~&gt; 5.0'
  # Use Uglifier as compressor for JavaScript assets
  gem 'uglifier', '&gt;= 1.3.0'
  # Use CoffeeScript for .coffee assets and views
  gem 'coffee-rails', '~&gt; 4.1.0'
  # See https://github.com/rails/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', '~&gt; 2.0'
  # bundle exec rake doc:rails generates the API under doc/api.
  gem 'sdoc', '~&gt; 0.4.0', group: :doc
  
  gem 'rake'
  
  # Use ActiveModel has_secure_password
  # gem 'bcrypt', '~&gt; 3.1.7'
  
  # Use Unicorn as the app server
  # gem 'unicorn'
  
  # Use Capistrano for deployment
  # gem 'capistrano-rails', group: :development
  
  group :development, :test do
    # Call 'byebug' anywhere in the code to stop execution and get a debugger console
    gem 'byebug'
  end
  
  group :development do
    # Access an IRB console on exception pages or by using &lt;%= console %&gt; in views
    gem 'web-console', '~&gt; 2.0'
  
    # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
    gem 'spring'
  end
  </code></pre>