- Caching the entire virtualenv in Travis CI has proven to cause issues,...

- Caching the entire virtualenv in Travis CI has proven to cause issues, caching just pip's cache directory.

.travis.yml

@@ -9,7 +9,6 @@ cache:
   - pip
   - directories:
       - $HOME/.pre-commit
-      - $HOME/virtualenv
 
 install:
   - pip install -r tests/requirements.txt | cat