subprocess.communicate with timeout 0 and already terminated process generates TimeoutExpired on Linux

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2017-02-07.11:57:14.624>
labels = ['type-bug', 'library']
title = 'subprocess.communicate with timeout 0 and already terminated process generates TimeoutExpired on Linux'
updated_at = <Date 2017-02-07.12:36:53.465>
user = 'https://github.com/Griffon26'

bugs.python.org fields:

activity = <Date 2017-02-07.12:36:53.465>
actor = 'spoorcc'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2017-02-07.11:57:14.624>
creator = 'Griffon26'
dependencies = []
files = ['46557']
hgrepos = []
issue_num = 29472
keywords = []
message_count = 1.0
messages = ['287230']
nosy_count = 2.0
nosy_names = ['Griffon26', 'spoorcc']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue29472'
versions = ['Python 3.6']