Machine default already exists in VirtualBox.
Starting machine default...
Started machines may have new IP addresses. You may need to re-run the docker-machine env
command.
Setting environment variables for machine default...
Unexpected error getting machine url: exit status 255
## .
## ## ## ==
## ## ## ## ## ===
/"""""""""""""""""\___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ / ===- ~~~
\______ o __/
\ \ __/
\____\_______/
exit status 255
docker is configured to use the default machine with IP
For help getting started, check out the docs at https://docs.docker.com
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