dev-utils(1.0.1)

使っているライブラリの extensions が Continuation クラスを拡張している。yarv にはないのでエラーになる。

date@assam dev-utils-1.0.1 $ ruby-yarv examples/breakpoint-example.rb 
/usr/local/yarv/lib/ruby/gems/2.0/gems/extensions-0.6.0/lib/extensions/continuation.rb:13:in `<top (required)>': uninitialized constant Continuation (NameError)
        from /usr/local/yarv/lib/ruby/site_ruby/2.0/rubygems/custom_require.rb:21:in `require__'
        from /usr/local/yarv/lib/ruby/site_ruby/2.0/rubygems/custom_require.rb:21:in `require'
        from /usr/local/yarv/lib/ruby/gems/2.0/gems/extensions-0.6.0/lib/extensions/binding.rb:9:in `<top (required)>'
        from /usr/local/yarv/lib/ruby/site_ruby/2.0/rubygems/custom_require.rb:21:in `require__'
        from /usr/local/yarv/lib/ruby/site_ruby/2.0/rubygems/custom_require.rb:21:in `require'
        from /usr/local/yarv/lib/ruby/gems/2.0/gems/dev-utils-1.0.1/lib/dev-utils/debug/irb.rb:8:in `<top (required)>'
        from /usr/local/yarv/lib/ruby/site_ruby/2.0/rubygems/custom_require.rb:21:in `require__'
        from /usr/local/yarv/lib/ruby/site_ruby/2.0/rubygems/custom_require.rb:21:in `require'
        from /usr/local/yarv/lib/ruby/gems/2.0/gems/dev-utils-1.0.1/lib/dev-utils/debug.rb:28:in `<top (required)>'
        from /usr/local/yarv/lib/ruby/site_ruby/2.0/rubygems/custom_require.rb:27:in `each'
        from /usr/local/yarv/lib/ruby/site_ruby/2.0/rubygems/custom_require.rb:27:in `require__'
        from /usr/local/yarv/lib/ruby/site_ruby/2.0/rubygems/custom_require.rb:27:in `rescue in require'
        from /usr/local/yarv/lib/ruby/site_ruby/2.0/rubygems/custom_require.rb:21:in `require'
        from examples/breakpoint-example.rb:14:in `<main>'