Selenium tests timing out

Can you add the following environment variable to your project:

DBUS_SESSION_BUS_ADDRESS = /dev/null

You can do this via the CircleCI UI: Project settings > Environment Variables

Or in circle.yml:

machine:
  environment:
    DBUS_SESSION_BUS_ADDRESS: /dev/null

Do let us know if that helps or not. Our testing suggests that this resolves issues related to x11-dbus and Xvfb in containerized environments with flaky browser testing using Selenium, Chrome / Firefox.