Not able to install fixtures to run Django tests on Jenkins

Here are the commands I use to run tests:

pip install -r requirements.pip
export DJANGO_SETTINGS_MODULE='settings.test'
python manage.py test

And here are database settings from test.py:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': 'app_db_test'
    }
}

The error message looks weird to me:

ConnectionError: Problem installing fixture '/var/lib/jenkins/workspace/Django Tests/fixture.json': Error 111 connecting to localhost:6379. Connection refused.

Why localhost:6379 when I'm trying to use sqlite?