This happens on Android where a SELinux policy prevents a plain user to bind() a pathname AF_UNIX socket (abstract and unnamed sockets are not constrained by this policy).

The errors are:

test_asyncio:
======================================================================
ERROR: test_start_unix_server_1 (test.test_asyncio.test_server.SelectorStartServerTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/data/local/tmp/python/lib/python3.8/test/test_asyncio/test_server.py", line 105, in test_start_unix_server_1
  srv = self.loop.run_until_complete(asyncio.start_unix_server(
File "/data/local/tmp/python/lib/python3.8/asyncio/base_events.py", line 589, in run_until_complete
  return future.result()
File "/data/local/tmp/python/lib/python3.8/asyncio/streams.py", line 115, in start_unix_server
  return await loop.create_unix_server(factory, path, **kwds)
File "/data/local/tmp/python/lib/python3.8/asyncio/unix_events.py", line 285, in create_unix_server
  sock.bind(path)
PermissionError: [Errno 13] Permission denied

test_socket:
======================================================================
ERROR: test_socket_fileno (test.test_socket.GeneralModuleTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/data/local/tmp/python/lib/python3.8/test/test_socket.py", line 1780, in test_socket_fileno
  s.bind(os.path.join(tmpdir, 'socket'))
PermissionError: [Errno 13] Permission denied

test_stat:
======================================================================
ERROR: test_socket (test.test_stat.TestFilemodeCStat)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/data/local/tmp/python/lib/python3.8/test/test_stat.py", line 198, in test_socket
  s.bind(TESTFN)
PermissionError: [Errno 13] Permission denied

======================================================================
ERROR: test_socket (test.test_stat.TestFilemodePyStat)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/data/local/tmp/python/lib/python3.8/test/test_stat.py", line 198, in test_socket
  s.bind(TESTFN)
PermissionError: [Errno 13] Permission denied