---
- name: Missing colon
  from: '@perlpunk'
  tags: error mapping
  fail: true
  yaml: |
    top1:
      key1: val1
    top2
  tree: |
    +STR
     +DOC
      +MAP
       =VAL :top1
       +MAP
        =VAL :key1
        =VAL :val1
       -MAP