Incorrect PATH warning even though ruby version is specified

I get this error when my capistrano (`capistrano-rvm (0.1.1)`) script runs rvm commands:

```
Warning! PATH is not properly set up, '/usr/local/rvm/gems/ruby-2.1.0/bin' is not at first place,
usually this is caused by shell initialization files - check them for 'PATH=...' entries,
it might also help to re-add RVM to your dotfiles: 'rvm get stable --auto-dotfiles',
to fix temporarily in this shell session run: 'rvm use ruby-2.1.0'.
```

At the same time, I have `set :rvm_ruby_version, '2.1.0'` in my `deploy.rb`.

It appears that `capistrano-rvm` does not choose ruby properly. If I execute rvm commands manually, I get this warning too. However, it goes away if I execute `rvm use 2.1.0` first.