test_listdir is failing on ubuntu with WSL

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-10-12.05:06:32.873>
labels = ['tests', '3.9']
title = 'test_listdir is failing on ubuntu with WSL'
updated_at = <Date 2020-03-17.02:41:17.445>
user = 'https://github.com/isidentical'

bugs.python.org fields:

activity = <Date 2020-03-17.02:41:17.445>
actor = 'Matthias Braun'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Tests']
creation = <Date 2019-10-12.05:06:32.873>
creator = 'BTaskaya'
dependencies = []
files = []
hgrepos = []
issue_num = 38454
keywords = []
message_count = 3.0
messages = ['354518', '354550', '364385']
nosy_count = 4.0
nosy_names = ['eryksun', 'steve.dower', 'BTaskaya', 'Matthias Braun']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue38454'
versions = ['Python 3.9']