I am trying to install resque brain (https://github.com/stitchfix/resque-brain) on my vm machine which runs centos. When I run 'rake test' I get the following error.
[!] There was an error parsing `Gemfile`: compile error - syntax error, unexpected ':', expecting $end
gem 'spring', group: :development
^. Bundler cannot continue.
# from /root/user/resque-brain/Gemfile:11
# -------------------------------------------
# gem 'jbuilder', '~> 2.0'
> gem 'spring', group: :development
# gem 'bower-rails'
# -------------------------------------------
Any suggestions how I might be able to fix this? I tried so far to update ruby and buddle.
# bundle -v
Bundler version 1.10.6
# ruby -v
ruby 1.8.7 (2013-06-27 patchlevel 374) [x86_64-linux]