```
Unfortunately, since our latest image update, Python 3.5 doesn't come pre-installed anymore. Hence, you will have to install it via `pyenv` as a first step e.g.
before_install
- pyenv install 3.5.0 && pyenv global 3.5.0
support@travis-ci.com
```
Hi Christopher,
Thank you for reaching out and sorry to hear about the troubles.
Regarding the pip3 error, it was indeed caused by our image updates. We've cleaned-up the way we set-up the Python environment and now strictly enforce Python version use using pyenv. Which means that if you want to use a different Python version than the system one (which is 2.7.6), you have to explicitly specify it. Adding a "before_install: pyenv global 3.5" step to your travis.yml should switch the system version and make pip3 work without installing any additional packages.
To run these tests, in cmake build-dir:
make jsoncpp_check
TravisCI is now set to run these always.
For now, the test_json_lib unit-tests will still run.
issue #187