Activated Ruby RAKE 10.0.1, require 10.0.0

Question

I get this error when i try to run "rake test":

avery@ubuntu:~/rails_projects/depot$ rake test
rake aborted!
You have already activated rake 10.0.1, but your Gemfile requires rake 10.0.0. Using bundle exec may solve this.
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/bundler-1.2.2/lib/bundler/runtime.rb:31:in `block in setup'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/bundler-1.2.2/lib/bundler/runtime.rb:17:in `setup'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/bundler-1.2.2/lib/bundler.rb:116:in `setup'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/bundler-1.2.2/lib/bundler/setup.rb:7:in `<top (required)>'
/home/avery/rails_projects/depot/config/boot.rb:6:in `<top (required)>'
/home/avery/rails_projects/depot/config/application.rb:1:in `<top (required)>'
/home/avery/rails_projects/depot/Rakefile:5:in `<top (required)>'
(See full trace by running task with --trace)

when i try running "bundle exec rake" i get:

rake aborted!
Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes.
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:in `autodetect'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/execjs-1.4.0/lib/execjs.rb:5:in `<module:ExecJS>'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/execjs-1.4.0/lib/execjs.rb:4:in `<top (required)>'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `require'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `<top (required)>'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/bundler-1.2.2/lib/bundler/runtime.rb:68:in `require'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/bundler-1.2.2/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/bundler-1.2.2/lib/bundler/runtime.rb:66:in `each'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/bundler-1.2.2/lib/bundler/runtime.rb:66:in `block in require'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/bundler-1.2.2/lib/bundler/runtime.rb:55:in `each'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/bundler-1.2.2/lib/bundler/runtime.rb:55:in `require'
/home/avery/.rvm/gems/ruby-1.9.3-p327/gems/bundler-1.2.2/lib/bundler.rb:128:in `require'
/home/avery/rails_projects/depot/config/application.rb:7:in `<top (required)>'
/home/avery/rails_projects/depot/Rakefile:5:in `require'
/home/avery/rails_projects/depot/Rakefile:5:in `<top (required)>'
(See full trace by running task with --trace)

how can i fix this?

Answer 1

You probably have rake 10.0.0 in your Gemfile.lock.

Removing Gemfile.lock might solve the problem.

Answer 2

For the first part of the question: I ran into the same problem and solved it with a:

gem regenerate_binstubs

after that

gem -V

reveals 10.0.0 again.