Could not find rake-0.9.2.2 in any of the sources

Question

This is an odd one. I'm getting this error when I run rake to do tests but not when I migrate. I'm running RVM, the shell dump below should give any information you need.

Any help would be greatly appreciated. I've seen a few other people with this issue, but no solutions that worked for me yet (or them).

Thanks.

$ rake
Could not find rake-0.9.2.2 in any of the sources
Run `bundle install` to install missing gems.
Could not find rake-0.9.2.2 in any of the sources
Run `bundle install` to install missing gems.
Errors running test:units, test:functionals, test:integration!



$ ruby -v
    ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin11.4.0]
    $ rails -v
    Rails 3.1.6

$ more .rvmrc 
rvm ruby-1.9.3-p194@...
$ rake db:rollback
==  AddAllLocationsToAlert: reverting =========================================
-- remove_column(...
   -> 0.0320s
==  AddAllLocationsToAlert: reverted (0.0321s) ================================

------- EDIT::::

I have since upgraded to the latest Rails - 3.2.6. The error still occurs, even if I use 'bundle exec'. (This is not new to 3.2.6 - I was still getting the issue under 3.1) The undefined method is new though.

Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.
$ bundle exec rake
Could not find rake-0.9.2.2 in any of the sources
Run `bundle install` to install missing gems.
Could not find rake-0.9.2.2 in any of the sources
Run `bundle install` to install missing gems.
Errors running test:units! #<NoMethodError: undefined method `[]' for nil:NilClass>
Errors running test:functionals! #<RuntimeError: Command failed with status (7): [/Users/ben/.rvm/rubies/ruby-1.9.3-p194/bin...]>
Errors running test:integration! #<RuntimeError: Command failed with status (7): [/Users/ben/.rvm/rubies/ruby-1.9.3-p194/bin...]>

My Gemfile, as requested:

source 'http://rubygems.org'

gem 'rails', '3.2.6'

group :assets do
  gem 'sass-rails', "  ~> 3.2.5"
  gem 'coffee-rails', "~> 3.2.1"
  gem 'uglifier', '>= 1.2.6'
end

gem 'jquery-rails'

gem 'rake'
gem "mysql2"

gem "squeel"
gem 'tinymce-rails'
gem 'dynamic_form'

gem 'will_paginate'
gem 'devise'
gem 'whitelist'
gem 'rmagick'
gem 'json'
gem 'paperclip'
gem 'acts_as_list', :git => 'https://github.com/swanandp/acts_as_list'
gem 'htmlentities'
gem 'formtastic'
# Bundle gems for the local environment. Make sure to
# put test-only gems in this group so their generators
# and rake tasks are available in development mode:
# group :development, :test do
#   gem 'webrat'
# end

Answer 1

gem 'rake', ">=0.9.2" # in your Gemfile

then

$ bundle install

then

$ bundle exec rake

if above not worked :

$ rvm all do gem install rake -v 0.9.2.2#install rake to all ruby versions

then run rake again

Answer 2

If you're using bundler (and with rails, you probably do), always run rake like this:

bundle exec rake

This will pick up gems specified in your Gemfile.