Buildbots: random "Failed to connect to github.com port 443: Connection timed out" errors

[vstinner]

BPO	31674
Nosy	@vstinner

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2017-10-24.09:24:18.005>
created_at = <Date 2017-10-03.11:44:09.643>
labels = ['3.7', 'tests']
title = 'Buildbots: random "Failed to connect to github.com port 443: Connection timed out" errors'
updated_at = <Date 2017-10-24.09:24:18.004>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2017-10-24.09:24:18.004>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2017-10-24.09:24:18.005>
closer = 'vstinner'
components = ['Tests']
creation = <Date 2017-10-03.11:44:09.643>
creator = 'vstinner'
dependencies = []
files = []
hgrepos = []
issue_num = 31674
keywords = ['buildbot']
message_count = 2.0
messages = ['303598', '304886']
nosy_count = 1.0
nosy_names = ['vstinner']
pr_nums = []
priority = 'normal'
resolution = 'out of date'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue31674'
versions = ['Python 3.7']

[vstinner]

Sometimes, the "git" step fails on buildbots. ARMv7 Ubuntu 3.x just failed on build 1481, atTue Oct 3 11:14:22 2017:

http://buildbot.python.org/all/builders/ARMv7%20Ubuntu%203.x/builds/1481/steps/git/logs/stdio

git fetch -t https://github.com/python/cpython.git master
(...)
fatal: unable to access 'https://github.com/python/cpython.git/': Failed to connect to github.com port 443: Connection timed out

[vstinner]

I didn't see the failure recently, I close the issue.