This happens on Android for a non-root user.  Multiple tests fail in test_socketserver with identical backtraces, only the first one is listed here.

======================================================================                    [905/2616]
ERROR: test_ForkingUnixDatagramServer (test.test_socketserver.SocketServerTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/sdcard/org.bitbucket.pyona/lib/python3.7/test/test_socketserver.py", line 243, in test_Fork
ingUnixDatagramServer
    self.dgram_examine)
  File "/sdcard/org.bitbucket.pyona/lib/python3.7/test/support/__init__.py", line 2040, in decorator
    return func(*args)
  File "/sdcard/org.bitbucket.pyona/lib/python3.7/test/test_socketserver.py", line 121, in run_serve
r
    svrcls, hdlrbase)
  File "/sdcard/org.bitbucket.pyona/lib/python3.7/test/test_socketserver.py", line 114, in make_serv
er
    server = MyServer(addr, MyHandler)
  File "/sdcard/org.bitbucket.pyona/lib/python3.7/socketserver.py", line 452, in __init__
    self.server_bind()
  File "/sdcard/org.bitbucket.pyona/lib/python3.7/socketserver.py", line 466, in server_bind
    self.socket.bind(self.server_address)
PermissionError: [Errno 13] Permission denied

Patch attached.

New patch following Serhiy's suggestion in msg285008.

New changeset 9001d1f438e968f4d327313e0a95a49f22e724f4 by xdegaye in branch 'master':
bpo-29184: Skip test_socketserver tests on PermissionError raised by Android (GH-4387)
https://github.com/python/cpython/commit/9001d1f438e968f4d327313e0a95a49f22e724f4