FailFast: cancelling since parallel instance has failed

buildx failed with: ERROR: failed to receive status: rpc error: code = Unavailable desc = error reading from server: command [ssh -l root -- arm docker system dial-stdio] has exited with exit status 255, please make sure the URL is valid, and Docker 18.09 or later is installed on the remote host: stderr=client_loop: send disconnect: Broken pipe

ERROR: error during connect: Get "http://docker.example.com/v1.24/containers/buildx_buildkit_builder-76e1e24b-a126-43cd-853f-9801a49da3c80/json": command [ssh -l root -- arm docker system dial-stdio] has exited with exit status 255, please make sure the URL is valid, and Docker 18.09 or later is installed on the remote host: stderr=ssh: connect to host *** port 22: Connection timed out