title: python pip install failures
body: <p>i am trying to install a library <code>pynput</code> using 
  <strong>sudo pip install pynput</strong></p>
  
  <p>but i am getting this error log. This has been happening with any other python package. everything used to work fine suddenly these errors are appearing i tried to copy error log from </p>
  
  <p><strong>~/.pip/pip.log</strong></p>
  
  <p>and this is what i have:</p>
  
  <pre><code> Using version 1.4 (newest of versions: 1.4, 1.3.10, 1.3.9, 1.3.8.1, 1.3.7, 1.3.6, 1.3.5, 1.3.4, 1.3.3, 1.3.2, 1.3.1, 1.3, 1.2, 1.1.7, 1.1.6, 1.1.5, 1.1.4, 1.1.3, 1.1.2, 1.1.1, 1.1, 1.0.6, 1.0.5, 1.0.4, 1.0.3, 1.0.2, 1.0.1, 1.0, 0.6, 0.5.1, 0.5, 0.4, 0.3, 0.2)
  Cleaning up...
    Removing temporary dir /tmp/pip_build_root...
  Exception:
  Traceback (most recent call last):
    File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main
      status = self.run(options, args)
    File "/usr/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/lib/python2.7/dist-packages/pip/req.py", line 1198, in prepare_files
      do_download,
    File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1376, in unpack_url
      self.session,
    File "/usr/lib/python2.7/dist-packages/pip/download.py", line 546, in unpack_http_url
      resp = session.get(target_url, stream=True)
    File "/usr/share/python-wheels/requests-2.2.1-py2.py3-none-any.whl/requests/sessions.py", line 467, in get
      return self.request('GET', url, **kwargs)
    File "/usr/lib/python2.7/dist-packages/pip/download.py", line 237, in request
      return super(PipSession, self).request(method, url, *args, **kwargs)
    File "/usr/share/python-wheels/requests-2.2.1-py2.py3-none-any.whl/requests/sessions.py", line 455, in request
      resp = self.send(prep, **send_kwargs)
    File "/usr/share/python-wheels/requests-2.2.1-py2.py3-none-any.whl/requests/sessions.py", line 558, in send
      r = adapter.send(request, **kwargs)
    File "/usr/share/python-wheels/requests-2.2.1-py2.py3-none-any.whl/requests/adapters.py", line 330, in send
      timeout=timeout
    File "/usr/share/python-wheels/urllib3-1.7.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 562, in urlopen
      body=body, headers=headers)
    File "/usr/share/python-wheels/urllib3-1.7.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 387, in _make_request
      conn.request(method, url, **httplib_request_kw)
    File "/usr/lib/python2.7/httplib.py", line 1017, in request
      self._send_request(method, url, body, headers)
    File "/usr/lib/python2.7/httplib.py", line 1051, in _send_request
      self.endheaders(body)
    File "/usr/lib/python2.7/httplib.py", line 1013, in endheaders
      self._send_output(message_body)
    File "/usr/lib/python2.7/httplib.py", line 864, in _send_output
      self.send(msg)
    File "/usr/lib/python2.7/httplib.py", line 826, in send
      self.connect()
    File "/usr/share/python-wheels/urllib3-1.7.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 145, in connect
      match_hostname(self.sock.getpeercert(),
    File "/usr/share/python-wheels/urllib3-1.7.1-py2.py3-none-any.whl/urllib3/contrib/pyopenssl.py", line 313, in getpeercert
      for value in get_subj_alt_name(x509)
    File "/usr/share/python-wheels/urllib3-1.7.1-py2.py3-none-any.whl/urllib3/contrib/pyopenssl.py", line 94, in get_subj_alt_name
      asn1Spec=general_names)
    File "/usr/local/lib/python2.7/dist-packages/pyasn1/codec/ber/decoder.py", line 825, in __call__
      stGetValueDecoder, self, substrateFun
    File "/usr/local/lib/python2.7/dist-packages/pyasn1/codec/ber/decoder.py", line 391, in valueDecoder
      r.verifySizeSpec()
    File "/usr/local/lib/python2.7/dist-packages/pyasn1/type/base.py", line 252, in verifySizeSpec
      def verifySizeSpec(self): self._sizeSpec(self)
    File "/usr/local/lib/python2.7/dist-packages/pyasn1/type/constraint.py", line 32, in __call__
      '%s failed at: \"%s\"' % (self, sys.exc_info()[1])
  ValueConstraintError: ConstraintsIntersection(ConstraintsIntersection(), ValueSizeConstraint(1, 64)) failed at: "ValueSizeConstraint(1, 64) failed at: "SubjectAltName().setComponents(GeneralName(componentType=NamedTypes(NamedType('otherName', AnotherName(componentType=NamedTypes(NamedType('type-id', ObjectIdentifier('&lt;no value&gt;')), NamedType('value', ...........
  </code></pre>