Comment 13 for bug 1270710

Another similar traceback:

Downloading/unpacking SQLAlchemy>=0.7.8,!=0.9.5,<=0.9.99 (from keystone==2014.1.2.dev12.g077dd36)
Cleaning up...
Exception:
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main
    status = self.run(options, args)
  File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 278, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/usr/local/lib/python2.7/dist-packages/pip/req.py", line 1177, in prepare_files
    url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
  File "/usr/local/lib/python2.7/dist-packages/pip/index.py", line 196, in find_requirement
    url_name = self._find_url_name(Link(self.index_urls[0], trusted=True), url_name, req) or req.url_name
  File "/usr/local/lib/python2.7/dist-packages/pip/index.py", line 361, in _find_url_name
    page = self._get_page(index_url, req)
  File "/usr/local/lib/python2.7/dist-packages/pip/index.py", line 568, in _get_page
    session=self.session,
  File "/usr/local/lib/python2.7/dist-packages/pip/index.py", line 670, in get_page
    resp = session.get(url, headers={"Accept": "text/html"})
  File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/sessions.py", line 468, in get
    return self.request('GET', url, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/pip/download.py", line 237, in request
    return super(PipSession, self).request(method, url, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/sessions.py", line 456, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/sessions.py", line 596, in send
    r.content
  File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/models.py", line 694, in content
    self._content = bytes().join(self.iter_content(CONTENT_CHUNK_SIZE)) or bytes()
  File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/models.py", line 627, in generate
    for chunk in self.raw.stream(chunk_size, decode_content=True):
  File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/packages/urllib3/response.py", line 240, in stream
    data = self.read(amt=amt, decode_content=decode_content)
  File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/packages/urllib3/response.py", line 187, in read
    data = self._fp.read(amt)
  File "/usr/lib/python2.7/httplib.py", line 541, in read
    return self._read_chunked(amt)
  File "/usr/lib/python2.7/httplib.py", line 601, in _read_chunked
    value.append(self._safe_read(chunk_left))
  File "/usr/lib/python2.7/httplib.py", line 647, in _safe_read
    chunk = self.fp.read(min(amt, MAXAMOUNT))
  File "/usr/lib/python2.7/socket.py", line 380, in read
    data = self._sock.recv(left)
timeout: timed out