I'm testing Mercurial with Python 2.5b1, and I am getting severe badness in the socket module, complaining that _socket.socket doesn't have a recv_into method.

+  File "/tmp/hgtests.u_b_G-/install/lib/python/mercurial/httprangereader.py", line 24, in read
+    f = urllib2.urlopen(req)
+  File "/export/home/bos/src/py25/lib/python2.5/urllib2.py", line 121, in urlopen
+    return _opener.open(url, data)
+  File "/export/home/bos/src/py25/lib/python2.5/urllib2.py", line 374, in open
+    response = self._open(req, data)
+  File "/export/home/bos/src/py25/lib/python2.5/urllib2.py", line 392, in _open+    '_open', req)
+  File "/export/home/bos/src/py25/lib/python2.5/urllib2.py", line 353, in _call_chain
+    result = func(*args)
+  File "/export/home/bos/src/py25/lib/python2.5/urllib2.py", line 1099, in http_open
+    return self.do_open(httplib.HTTPConnection, req)
+  File "/export/home/bos/src/py25/lib/python2.5/urllib2.py", line 1071, in do_open
+    h.request(req.get_method(), req.get_selector(), req.data, headers)
+  File "/export/home/bos/src/py25/lib/python2.5/httplib.py", line 862, in request
+    self._send_request(method, url, body, headers)
+  File "/export/home/bos/src/py25/lib/python2.5/httplib.py", line 885, in _send_request
+    self.endheaders()
+  File "/export/home/bos/src/py25/lib/python2.5/httplib.py", line 856, in endheaders
+    self._send_output()
+  File "/export/home/bos/src/py25/lib/python2.5/httplib.py", line 728, in _send_output
+    self.send(msg)
+  File "/export/home/bos/src/py25/lib/python2.5/httplib.py", line 695, in send
+    self.connect()
+  File "/export/home/bos/src/py25/lib/python2.5/httplib.py", line 666, in connect
+    self.sock = socket.socket(af, socktype, proto)
+  File "/export/home/bos/src/py25/lib/python2.5/socket.py", line 154, in __init__
+    self.recv_into = self._sock.recv_into
+AttributeError: '_socket.socket' object has no attribute 'recv_into'