# Raises an error if we pass alertmanager.interval value that doesn't parse
karma.bin-should-fail-no-timestamp --log.format=text --log.config=false --log.level=error --config.file karma.yaml
! stdout .
stderr 'level=fatal msg=".* invalid duration abc123"'

-- karma.yaml --
alertmanager:
  interval: abc123
  servers:
    - name: am
      uri: https://localhost:9093
