noop progress bar is nil progress bar
noop progress bar is nil progress bar

ricardclau/packer,ricardclau/packer,mitchellh/packer,ricardclau/packer,mitchellh/packer,pecigonzalo/packer,rnaveiras/packer,hashicorp/packer,ricardclau/packer,rnaveiras/packer,pecigonzalo/packer,pecigonzalo/packer,mitchellh/packer,rnaveiras/packer,pecigonzalo/packer,ricardclau/packer,hashicorp/packer,rnaveiras/packer,hashicorp/packer,mitchellh/packer,rnaveiras/packer,ricardclau/packer,mitchellh/packer,rnaveiras/packer,hashicorp/packer