Getting there. The error message is similar:

$ ./python.exe -m test test_ssl -m test_get_server_certificate -u all -F
...
0:02:11 load avg: 2.10 [328] test_ssl
test test_ssl failed -- Traceback (most recent call last):
  File "/Users/erlendaasland/src/cpython-ssl/Lib/test/test_ssl.py", line 2132, in test_get_server_certificate
    _test_get_server_certificate(self, *self.server_addr, cert=SIGNING_CA)
  File "/Users/erlendaasland/src/cpython-ssl/Lib/test/test_ssl.py", line 2329, in _test_get_server_certificate
    pem = ssl.get_server_certificate((host, port), ca_certs=cert)
  File "/Users/erlendaasland/src/cpython-ssl/Lib/ssl.py", line 1521, in get_server_certificate
    with context.wrap_socket(sock, server_hostname=host) as sslsock:
  File "/Users/erlendaasland/src/cpython-ssl/Lib/ssl.py", line 518, in wrap_socket
    return self.sslsocket_class._create(
  File "/Users/erlendaasland/src/cpython-ssl/Lib/ssl.py", line 1070, in _create
    self.do_handshake()
  File "/Users/erlendaasland/src/cpython-ssl/Lib/ssl.py", line 1339, in do_handshake
    self._sslobj.do_handshake()
ConnectionResetError: [Errno 54] Connection reset by peer

test_ssl failed

== Tests result: FAILURE ==