! exec pint --no-color lint --require-owner rules
! stdout .
cmp stderr stderr.txt

-- stderr.txt --
level=INFO msg="Finding all rules to check" paths=["rules"]
level=WARN msg="Failed to parse file content" err="duplicated group name" path=rules/strict.yml line=4
level=INFO msg="Checking Prometheus rules" entries=1 workers=10 online=true
Fatal: duplicated group name (yaml/parse)
  ---> rules/strict.yml:4
 4 | - name: foo
     ^^^ duplicated group name

level=INFO msg="Problems found" Fatal=1
level=ERROR msg="Execution completed with error(s)" err="found 1 problem(s) with severity Bug or higher"
-- rules/strict.yml --
groups:
- name: foo
  rules: []
- name: foo
  rules: []
