Multiple YAML errors cause internal database error

Drone Bugs
1

If there are too many errors in YAML, the error message gets too long, which fails in the database.

Whether this YAML should parse is another question, for example PyYAML’s safe_load loads it fine.

Repro:

kind: pipeline
type: docker
name: default
steps:
  - name: step
    image: alpine
    commands:
      # starts at line 11 for ease of counting
      # each line accounts for a 'line <LINENO>: cannot unmarshal !!map into string', that plus initial 'yaml: unmarshal errors: ' and a space between each error gives us 24 + 43 * N + N - 1 = 23 + 44 * N characters
      # the error column limit is 500 characters so 23 + 44 * N = 500 ; (500 - 23) / 44 = N; N ~= 10.84, so 10 errors will work but 11 will cause an error.
      - echo "Moo: Min"
      - echo "Moo: Min"
      - echo "Moo: Min"
      - echo "Moo: Min"
      - echo "Moo: Min"
      - echo "Moo: Min"
      - echo "Moo: Min"
      - echo "Moo: Min"
      - echo "Moo: Min"
      - echo "Moo: Min"
      # - echo "Moo: Min"  # Uncomment to break Drone.

webhook response: {"message":"pq: value too long for type character varying(500)"}

Postgres statement:

2020-12-31 10:47:41 UTC:10.240.7.252(50612):drone@drone:[2335]:ERROR: value too long for type character varying(500)
2020-12-31 10:47:41 UTC:10.240.7.252(50612):drone@drone:[2335]:STATEMENT:
INSERT INTO builds (
build_repo_id
... snip - nothing relevant, values not there

I don’t know the Drone version cause it’s another team that maintains it and for some reason Drone no longer has its version in the footer but it’s fairly recent.