10:20:11 + echo 'templates/devstack-pre-pip-stein.json: '
10:20:11 templates/devstack-pre-pip-stein.json: 
10:20:11 + for template in '"${templates[@]}"'
10:20:11 + export PACKER_LOG=yes
10:20:11 + PACKER_LOG=yes
10:20:11 + export PACKER_LOG_PATH=/w/workspace/builder-packer-verify/archives/packer/packer-validate-centos-7-arm64.json-docker.json.log
10:20:11 + PACKER_LOG_PATH=/w/workspace/builder-packer-verify/archives/packer/packer-validate-centos-7-arm64.json-docker.json.log
10:20:11 ++ packer.io validate -var-file=/w/workspace/builder-packer-verify@tmp/config1885373305959118788tmp -var-file=common-packer/vars/centos-7-arm64.json templates/docker.json
10:20:12 + output='Error: 
10:20:12 
10:20:12 1 error occurred:
10:20:12 	* required variable not set: docker_source_image'
10:20:12 + echo 'templates/docker.json: Error: 
10:20:12 
10:20:12 1 error occurred:
10:20:12 	* required variable not set: docker_source_image'
10:20:12 templates/docker.json: Error: