Ansible Syntax Error when attempting to run provision.sh

[DonSchenck]

➜  openshift-hybridizer git:(master) ./provision.sh 
Not loading passwords
Not loading environment vars
Not loading ssh key
ERROR! Syntax Error while loading YAML.
  mapping values are not allowed in this context

The error appears to have been in '/runner/env/extravars': line 3, column 15, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:

+++---
ansible_become: no
              ^ here

[DonSchenck]

For some reason -- did I do it? -- the very first line in my file was

+++---

Changed it to --- and it fixed this error.

[DonSchenck]

My error; code is fine as-is.