The directory or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.

I am receiving the following message when trying to install virtualenv via: sudo pip install virtualenv

```
Bryans-MacBook-Pro:/ BryanB$ sudo pip install virtualenv
The directory '/Users/BryanB/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/BryanB/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
```

Tried `sudo -H pip install virtualenv`

Result
`Requirement already satisfied: virtualenv in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages`

I am unsure how to resolve this issue.