fails with Ruby 2.2.3 but not Ruby 2.2.2

[DanielKehoe]

I use the rvm gem (version 1.11.3.9) in Rails Composer to generate a project-specific rvm gemset.

I've got Ruby 2.2.2 (installed with RVM) and Rails Composer works fine:

$ rails new myapp -m https://raw.github.com/RailsApps/rails-composer/master/composer.rb
.
.
.
Use or create a project-specific rvm gemset? (y/n) y
.
.
.
(success)

I recently installed Ruby 2.2.3 and Rails 4.2.5 and Rails Composer fails:

$ rails new myapp -m https://raw.github.com/RailsApps/rails-composer/master/composer.rb
.
.
.
Use or create a project-specific rvm gemset? (y/n) y
.
.
.
recipe creating project-specific rvm gemset and .rvmrc
https://raw.github.com/RailsApps/rails-composer/master/composer.rb:2606:
in `rescue in apply': RVM gem is currently unavailable. (RuntimeError)
    from https://raw.github.com/RailsApps/rails-composer/master/composer.rb:2600:in `apply'

Here's the code that uses the rvm gem:

if prefs[:rvmrc]
  if which("rvm")
    say_wizard "recipe creating project-specific rvm gemset and .rvmrc"
    # using the rvm Ruby API, see:
    # http://blog.thefrontiergroup.com.au/2010/12/a-brief-introduction-to-the-rvm-ruby-api/
    # https://rvm.io/integration/passenger
    if ENV['MY_RUBY_HOME'] && ENV['MY_RUBY_HOME'].include?('rvm')
      begin
        gems_path = ENV['MY_RUBY_HOME'].split(/@/)[0].sub(/rubies/,'gems')
        ENV['GEM_PATH'] = "#{gems_path}:#{gems_path}@global"
        require 'rvm'
        RVM.use_from_path! File.dirname(File.dirname(__FILE__))
      rescue LoadError
        raise "RVM gem is currently unavailable."
      end
    end
    say_wizard "creating RVM gemset '#{app_name}'"
    RVM.gemset_create app_name
    say_wizard "switching to gemset '#{app_name}'"
    # RVM.gemset_use! requires rvm version 1.11.3.5 or newer
    rvm_spec =
      if Gem::Specification.respond_to?(:find_by_name)
        Gem::Specification.find_by_name("rvm")
      else
        Gem.source_index.find_name("rvm").last
      end
      unless rvm_spec.version > Gem::Version.create('1.11.3.4')
        say_wizard "rvm gem version: #{rvm_spec.version}"
        raise "Please update rvm gem to 1.11.3.5 or newer"
      end
    begin
      RVM.gemset_use! app_name
    rescue => e
      say_wizard "rvm failure: unable to use gemset #{app_name}, reason: #{e}"
      raise
    end
    if File.exist?('.ruby-version')
      say_wizard ".ruby-version file already exists"
    else
      create_file '.ruby-version', "#{RUBY_VERSION}\n"
    end
    if File.exist?('.ruby-gemset')
      say_wizard ".ruby-gemset file already exists"
    else
      create_file '.ruby-gemset', "#{app_name}\n"
    end
  else
    say_wizard "WARNING! RVM does not appear to be available."
  end
end

Has something changed? Does the rvm gem still work with Ruby 2.2.3?