This MR, update docker-machine to v0.10.0, to fix an issue with coreos 1298.5.0 during provision.
Here the error.
command : sudo systemctl -f start docker err : exit status 5 output : Failed to start docker.service: Unit early-docker.target not found.
You can find more information here : https://github.com/docker/machine/issues/3980
CoreOS 1298.5.0 is now the stable version.
I think all gitlab-ci-multi-runner release will be impact by this issue. GitlabCI use CoreOS stable for free shared runners.