Here’s another interesting tidbit - it fails in the configuration where we have the read/write artifact caches turned on.

./pants clean-all test script:test --config-override=pants-ci.ini 
…

12:47:25 00:03     [rspecs]
                   Bundler setup
                   Checking if bundle is installedWARN] /Users/zundel/.pex/install/requests-2.5.3-py2.py3-none-any.whl.ed9d28acc3c467062b25b9dc2e2084d6efa8ee1e/requests-2.5.3-py2.py3-none-any.whl/requests/packages/urllib3/connection.py:251: SecurityWarning: Certificate has no `subjectAltName`, falling back to check for a `commonName` for now. This feature is being removed by major browsers and deprecated by RFC 2818. (See <https://github.com/shazow/urllib3/issues/497> for details.)
  SecurityWarning


                   Running specs
                   Finished in 2.61 seconds (files took 0.23828 seconds to load)
                   33 examples, 0 failures
               Waiting for background workers to finish.
12:47:30 00:08   [complete]
               FAILURE