TASK [os_swift : Verify md5sum of builder files] *******************************************************************************************************************************************************************************************************************************

skipping: [aio1] => (item=aio1)

fatal: [aio1]: FAILED! => {"msg": "The conditional check 'hostvars[item]['builder_md5sum'] != md5sum.stdout' failed. The error was: error while evaluating conditional (hostvars[item]['builder_md5sum'] != md5sum.stdout): 'ansible.vars.hostvars.HostVarsVars object' has no attribute 'builder_md5sum'\n\nThe error appears to have been in '/etc/ansible/roles/os_swift/tasks/swift_rings_post_distribution_check.yml': line 24, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n# As this is post sync all should match and not be empty\n- name: Verify md5sum of builder files\n  ^ here\n"}

here is a very detailed error log 

any tips ? thanks