This build appears to regress bz#1504709
After upgrading, I'm getting:
▌docker logs d0e69d395b33 container_linux.go:247: starting container process caused "process_linux.go:258: applying cgroup configuration for process caused \"No such device or address\""
Thanks for the feedback greg! I'll go ahead and drop the python3 sub-package for now.
I've filed a bug upstream to try to convince the Molecule folks to support python3. Hopefully, they will let me re-enable that package in the near future.