0.12.1 mitmproxy Windows error

gistfile1.txt

    Installed c:\users\elitest\appdata\local\temp\easy_install-ftsygu\cryptography-0.9.1\.eggs\pycparser-2.14-py2.7.egg
    no previously-included directories found matching 'docs\_build'
    warning: no previously-included files matching '*' found under directory 'vectors'
    _Cryptography_cffi_a269d620xd5c405b7.c
    src\cryptography\hazmat\bindings\__pycache__\_Cryptography_cffi_a269d620xd5c405b7.c(217) : fatal error C1083: Cannot open include file: 'openssl/aes.h': No such file or directory
    Traceback (most recent call last):
      File "<string>", line 20, in <module>
      File "c:\users\elitest\appdata\local\temp\pip-build-lvbpgz\netlib\setup.py", line 87, in <module>
        "install": CFFIInstall,
      File "C:\Python27\lib\distutils\core.py", line 111, in setup
        _setup_distribution = dist = klass(attrs)
      File "C:\Python27\lib\site-packages\setuptools\dist.py", line 268, in __init__
        self.fetch_build_eggs(attrs['setup_requires'])
      File "C:\Python27\lib\site-packages\setuptools\dist.py", line 313, in fetch_build_eggs
        replace_conflicting=True,
      File "C:\Python27\lib\site-packages\pkg_resources\__init__.py", line 830, in resolve
        dist = best[req.key] = env.best_match(req, ws, installer)
      File "C:\Python27\lib\site-packages\pkg_resources\__init__.py", line 1075, in best_match
        return self.obtain(req, installer)
      File "C:\Python27\lib\site-packages\pkg_resources\__init__.py", line 1087, in obtain
        return installer(requirement)
      File "C:\Python27\lib\site-packages\setuptools\dist.py", line 380, in fetch_build_egg
        return cmd.easy_install(req)
      File "C:\Python27\lib\site-packages\setuptools\command\easy_install.py", line 633, in easy_install
        rmtree(tmpdir)
      File "C:\Python27\lib\site-packages\setuptools\command\easy_install.py", line 2197, in rmtree
        rmtree(fullname, ignore_errors, onerror)
      File "C:\Python27\lib\site-packages\setuptools\command\easy_install.py", line 2197, in rmtree
        rmtree(fullname, ignore_errors, onerror)
      File "C:\Python27\lib\site-packages\setuptools\command\easy_install.py", line 2197, in rmtree
        rmtree(fullname, ignore_errors, onerror)
      File "C:\Python27\lib\site-packages\setuptools\command\easy_install.py", line 2202, in rmtree
        onerror(os.remove, fullname, sys.exc_info())
      File "C:\Python27\lib\site-packages\setuptools\command\easy_install.py", line 1609, in auto_chmod
        return func(arg)
    WindowsError: [Error 5] Access is denied: 'c:\\users\\elitest\\appdata\\local\\temp\\easy_install-ftsygu\\cryptography-0.9.1\\.eggs\\cffi-1.1.2-py2.7-win32.egg\\_cffi_backend.pyd'

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in c:\users\elitest\appdata\local\temp\pip-build-lvbpgz\netlib