Hi Team,
When docker-bench runs - it will try and detect if Docker Swarm exists and if not it will print an error such as:

dockerd-current: time="2020-04-02T18:19:01.654114156+11:00" level=error msg="Error retrieving swarm unlock key" error="This node is not a swarm ma
nager. Use "docker swarm init" or "docker swarm join" to connect this node to swarm and try again."

This is printed into /var/log/messages and can confuse the users who might think they have an issue with Docker.

Maybe if 'Docker Swarm' does not exists - simply skip that test or at least skip that message being printed?