请教一下，socket.timeout: timed out是什么原因，主机curl github是正常的

[manchesxia]

Traceback (most recent call last):
File "/root/QQ/GSIL1/GSIL/gsil/init.py", line 37, in search
return Engine(token=token).search(rule)
File "/root/QQ/GSIL1/GSIL/gsil/engine.py", line 162, in search
rate_limiting = self.g.rate_limiting
File "/usr/local/lib/python3.6/site-packages/github/MainClass.py", line 123, in rate_limiting
self.get_rate_limit()
File "/usr/local/lib/python3.6/site-packages/github/MainClass.py", line 145, in get_rate_limit
'/rate_limit'
File "/usr/local/lib/python3.6/site-packages/github/Requester.py", line 172, in requestJsonAndCheck
return self.__check(*self.requestJson(verb, url, parameters, headers, input, cnx))
File "/usr/local/lib/python3.6/site-packages/github/Requester.py", line 213, in requestJson
return self.__requestEncode(cnx, verb, url, parameters, headers, input, encode)
File "/usr/local/lib/python3.6/site-packages/github/Requester.py", line 252, in __requestEncode
status, responseHeaders, output = self.__requestRaw(cnx, verb, url, requestHeaders, encoded_input)
File "/usr/local/lib/python3.6/site-packages/github/Requester.py", line 277, in __requestRaw
requestHeaders
File "/usr/lib64/python3.6/http/client.py", line 1254, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/lib64/python3.6/http/client.py", line 1300, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/lib64/python3.6/http/client.py", line 1249, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/lib64/python3.6/http/client.py", line 1036, in _send_output
self.send(msg)
File "/usr/lib64/python3.6/http/client.py", line 974, in send
self.connect()
File "/usr/lib64/python3.6/http/client.py", line 1407, in connect
super().connect()
File "/usr/lib64/python3.6/http/client.py", line 946, in connect
(self.host,self.port), self.timeout, self.source_address)
File "/usr/lib64/python3.6/socket.py", line 724, in create_connection
raise err
File "/usr/lib64/python3.6/socket.py", line 713, in create_connection
sock.connect(sa)
socket.timeout: timed out

[manchesxia]

能收邮件，但是报错。。