title: Why my pip3 Ansible install failed? failed with error code 1 in /tmp/pip_build_root/cryptography
body: <p>On my Vagrant VM</p>
  
  <pre><code>sudo pip3 install ansible
  </code></pre>
  
  <p>It does not work</p>
  
  <pre><code>Command /usr/bin/python3 -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/cryptography/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-2wl0xdne-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_root/cryptography
  Storing debug log for failure in /home/vagrant/.pip/pip.log
  </code></pre>
  
  <p>I do not understand this. Where is actually /home/vagrant directory?
  How to fix this?</p>
  
  <p>Python3 version</p>
  
  <pre><code>vagrant@vagrant-ubuntu-trusty-64:~$ python3 --version
  Python 3.4.3
  </code></pre>