(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code MissingStructField)
  (message "constructor for `Point` is missing field `y`")
  (file "<fixture>")
  (span
    (bytes 76 89)
    (range 9 6 9 19)
  )
  (expected "field `y`")
)