Virtualenv 14 does not support Python 3.2 (and is installed by default now in Travis, see https://github.com/travis-ci/travis-ci/issues/5485). So force Travis to use an older version of virtualenv so that tests pass in py32 environment.
This is causing several PRs from the last few months to fail.
Virtualenv 14 does not support Python 3.2 (and is installed by default now in Travis, see https://github.com/travis-ci/travis-ci/issues/5485). So force Travis to use an older version of virtualenv so that tests pass in py32 environment.
This is causing several PRs from the last few months to fail.