With a snapcraft.yaml including 'base:': $ snapcraft version snapcraft, version 3.1 $ snapcraft pull $ multipass unmount snapcraft-<project> $ snapcraft clean <part> Launching a VM. Could not find snap/snapcraft.yaml. Are you sure you are in the right directory? To start a new project, use `snapcraft init` An error occurred when trying to execute 'sudo -i snapcraft clean <part>' with 'multipass': returned exit code 2.