pip3 install coala-bears
Downloading/unpacking coala-bears
  Downloading coala_bears-0.1.2-py3-none-any.whl (5.1MB): 5.1MB downloaded
Cleaning up...
Exception:
Traceback (most recent call last):
  File "/Users/-RooneY-/Desktop/src/coala/venv/lib/python3.3/site-packages/pip/_vendor/pkg_resources.py", line 2421, in _dep_map
    return self.__dep_map
  File "/Users/-RooneY-/Desktop/src/coala/venv/lib/python3.3/site-packages/pip/_vendor/pkg_resources.py", line 2283, in __getattr__
    raise AttributeError(attr)
AttributeError: _DistInfoDistribution__dep_map

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/-RooneY-/Desktop/src/coala/venv/lib/python3.3/site-packages/pip/basecommand.py", line 122, in main
    status = self.run(options, args)
  File "/Users/-RooneY-/Desktop/src/coala/venv/lib/python3.3/site-packages/pip/commands/install.py", line 278, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/Users/-RooneY-/Desktop/src/coala/venv/lib/python3.3/site-packages/pip/req.py", line 1265, in prepare_files
    req_to_install.extras):
  File "/Users/-RooneY-/Desktop/src/coala/venv/lib/python3.3/site-packages/pip/_vendor/pkg_resources.py", line 2232, in requires
    dm = self._dep_map
  File "/Users/-RooneY-/Desktop/src/coala/venv/lib/python3.3/site-packages/pip/_vendor/pkg_resources.py", line 2423, in _dep_map
    self.__dep_map = self._compute_dependencies()
  File "/Users/-RooneY-/Desktop/src/coala/venv/lib/python3.3/site-packages/pip/_vendor/pkg_resources.py", line 2447, in _compute_dependencies
    parsed = next(parse_requirements(distvers))
  File "/Users/-RooneY-/Desktop/src/coala/venv/lib/python3.3/site-packages/pip/_vendor/pkg_resources.py", line 2544, in parse_requirements
    line, p, specs = scan_list(VERSION,LINE_END,line,p,(1,2),"version spec")
  File "/Users/-RooneY-/Desktop/src/coala/venv/lib/python3.3/site-packages/pip/_vendor/pkg_resources.py", line 2512, in scan_list
    raise ValueError("Expected "+item_name+" in",line,"at",line[p:])
ValueError: ('Expected version spec in', 'autoflake ~=0.6.6', 'at', ' ~=0.6.6')

Storing debug log for failure in /Users/-RooneY-/.pip/pip.log