When trying to install a module (pycrypto in this case), easy_install fails with the following error (run via Git Bash)

$ easy_install pycrypto-2.6.win-amd64-py3.3.exe
Processing pycrypto-2.6.win-amd64-py3.3.exe
error: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\<uid>\\AppData\\Local\\Temp\\easy_install-z4dfyyqo\\pycrypto-2.6-py3.7-win32.egg.tmp\\Crypto\\Cipher\\__pycache__\\AES.cpython-33.pyc'

The version of easy_install that ships with Python 3.6 works as expected.