Do you by any chance have $MAILMAN_CONFIG_FILE environment variable set? That's the only way I can see triggering this failure. Still that should not cause test failures because tests should not be dependent on the environment. I'll fix that.
Do you by any chance have $MAILMAN_ CONFIG_ FILE environment variable set? That's the only way I can see triggering this failure. Still that should not cause test failures because tests should not be dependent on the environment. I'll fix that.