➜  ~R9SRC git:(master) ./pants                                                                               
Exception caught: (<class 'pex.resolver.Untranslateable'>)
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/bin/pants", line 11, in <module>
    sys.exit(main())
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pants/bin/pants_exe.py", line 44, in main
    PantsRunner(exiter).run()
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pants/bin/pants_runner.py", line 57, in run
    options_bootstrapper=options_bootstrapper)
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pants/bin/pants_runner.py", line 46, in _run
    return LocalPantsRunner(exiter, args, env, options_bootstrapper=options_bootstrapper).run()
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pants/bin/local_pants_runner.py", line 53, in run
    self._maybe_profiled(self._run)
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pants/bin/local_pants_runner.py", line 50, in _maybe_profiled
    runner()
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pants/bin/local_pants_runner.py", line 59, in _run
    options, build_config = OptionsInitializer(options_bootstrapper, exiter=self._exiter).setup()
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pants/bin/options_initializer.py", line 46, in __init__
    self._working_set = working_set or PluginResolver(self._options_bootstrapper).resolve()
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pants/bin/plugin_resolver.py", line 49, in resolve
    for plugin_location in self._resolve_plugin_locations():
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pants/bin/plugin_resolver.py", line 73, in _resolve_exact_plugin_locations
    for plugin in self._resolve_plugins():
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pants/bin/plugin_resolver.py", line 93, in _resolve_plugins
    cache_ttl=self._python_setup.resolver_cache_ttl)
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pex/resolver.py", line 346, in resolve
    return resolver.resolve(resolvables_from_iterable(requirements, builder))
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pex/resolver.py", line 200, in resolve
    dist = self.build(package, resolvable.options)
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pex/resolver.py", line 257, in build
    dist = super(CachingResolver, self).build(package, options)
  File "/Users/dyoung/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.1/lib/python2.7/site-packages/pex/resolver.py", line 168, in build
    raise Untranslateable('Package %s is not translateable by %s' % (package, translator))

Exception message: Package SourcePackage(u'file:///Users/dyoung/.cache/pants/plugins/pantsbuild.pants.contrib.node-1.2.1.tar.gz') is not translateable by ChainedTranslator(EggTranslator, SourceTranslator)