AttributeError: 'NoneType' object has no attribute 'parent', pylint 2.5.2

[HitLuca]

Description

pylint keeps throwing the same error after I try to check my python project. This issue started to happen in the latest updates, but I cannot ensure that it's specific to 2.5.2

Command that reproduces the bug

The command to reproduce the issue is pylint my_project --rcfile setup.cfg. I cannot share the source code of my project.

Stacktrace

Traceback (most recent call last):
  File "/Users/user/.local/share/virtualenvs/my_project/bin/pylint", line 8, in <module>
    sys.exit(run_pylint())
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/__init__.py", line 22, in run_pylint
    PylintRun(sys.argv[1:])
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/lint/run.py", line 344, in __init__
    linter.check(args)
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 871, in check
    self.get_ast, self._iterate_file_descrs(files_or_modules)
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 904, in _check_files
    self._check_file(get_ast, check_astroid_module, name, filepath, modname)
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 930, in _check_file
    check_astroid_module(ast_node)
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 1063, in check_astroid_module
    ast_node, walker, rawcheckers, tokencheckers
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 1107, in _check_astroid_module
    walker.walk(ast_node)
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 75, in walk
    self.walk(child)
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 75, in walk
    self.walk(child)
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 75, in walk
    self.walk(child)
  [Previous line repeated 1 more times]
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 72, in walk
    callback(astroid)
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/checkers/variables.py", line 1019, in visit_name
    self._check_late_binding_closure(node, defnode)
  File "/Users/user/.local/share/virtualenvs/my_project/lib/python3.6/site-packages/pylint/checkers/variables.py", line 1722, in _check_late_binding_closure
    maybe_for = maybe_for.parent
AttributeError: 'NoneType' object has no attribute 'parent'

setup.cfg section for pylint:

[pylint]
extension-pkg-whitelist=cv2
load-plugins=
    pylint.extensions.docparams,
    pylint.extensions.mccabe
disable=
    bad-continuation,
    wrong-import-position,
    invalid-name,
    line-too-long,
    too-few-public-methods,
    import-outside-toplevel,
    logging-fstring-interpolation

pylint --version output

pylint 2.5.2
astroid 2.4.1
Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 05:52:31) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)]

[PCManticore]

Is it possible to minimize the source code to a reproduction example?

[HitLuca]

Wow, I actually managed to break it down!

Here is the code that always fails (test.py)

from enum import Enum
from random import randint


class Test(Enum):
    TEST = (40, 160)

    @staticmethod
    def new_test(minimum=TEST[0], maximum=TEST[1]) -> int:
        return randint(minimum, maximum)

Command that I run:

pylint --rcfile=setup.cfg test.py

Even better, it happens without any configuration set (pylint test.py)