fixing indentation, i think this should fix this error:
/srv/rails/hydrant-test/releases/20120720145607/Gemfile:13:in `evaluate': compile error
/srv/rails/hydrant-test/releases/20120720145607/Gemfile:13: syntax error, unexpected ':', expecting $end
    git: 'https://github.com/variations-on-video/hydrant-workflow.git'
        ^ (SyntaxError)
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/gems/bundler-1.1.3/lib/bundler/definition.rb:18:in `build'
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/gems/bundler-1.1.3/lib/bundler.rb:135:in `definition'
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/gems/bundler-1.1.3/lib/bundler.rb:123:in `load'
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/gems/bundler-1.1.3/lib/bundler/cli.rb:400:in `exec'
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/gems/bundler-1.1.3/lib/bundler/vendor/thor/task.rb:22:in `send'
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/gems/bundler-1.1.3/lib/bundler/vendor/thor/task.rb:22:in `run'
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/gems/bundler-1.1.3/lib/bundler/vendor/thor/invocation.rb:118:in `invoke_task'
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/gems/bundler-1.1.3/lib/bundler/vendor/thor.rb:263:in `dispatch'
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/gems/bundler-1.1.3/lib/bundler/vendor/thor/base.rb:386:in `start'
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/gems/bundler-1.1.3/bin/bundle:13
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/bin/bundle:19:in `load'
       /home/vov/.rvm/gems/ree-1.8.7-2012.01/bin/bundle:19
There was an error in your Gemfile, and Bundler cannot continue.