An exception occurred running ./apricot

Missing or uninitialized constant: Rubinius::ToolSet (NameError)

Backtrace:

                           Module#const_missing at core/module.rb:548
               { } in Object(Module)#__script__ at /home/peter/.gem/rbx/2.2/gems/apricot-0.0.2/lib/apricot/generator.rb:2
                              Object#__script__ at /home/peter/.gem/rbx/2.2/gems/apricot-0.0.2/lib/apricot/generator.rb:1
                   Rubinius::CodeLoader.require at core/code_loader.rb:233
  Kernel(Object)#gem_original_require (require) at core/kernel.rb:847
                         Kernel(Object)#require at /usr/lib/rubinius/library/rubygems/core_ext/kernel_require.rb:54
                       { } in Object#__script__ at /home/peter/.gem/rbx/2.2/gems/apricot-0.0.2/lib/apricot.rb:11
                                     Array#each at core/array.rb:72
                              Object#__script__ at /home/peter/.gem/rbx/2.2/gems/apricot-0.0.2/lib/apricot.rb:11
                   Rubinius::CodeLoader.require at core/code_loader.rb:233
  Kernel(Object)#gem_original_require (require) at core/kernel.rb:847
                         Kernel(Object)#require at /usr/lib/rubinius/library/rubygems/core_ext/kernel_require.rb:126
                              Object#__script__ at apricot:2
               Rubinius::CodeLoader#load_script at core/code_loader.rb:505
               Rubinius::CodeLoader.load_script at core/code_loader.rb:590
                        Rubinius::Loader#script at core/loader.rb:680
                          Rubinius::Loader#main at core/loader.rb:867