(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code ResultObservationTypeMismatch)
  (message "`is_ok` requires a `(result i32 i32)`, `(result i64 i32)`, `(result f64 i32)`, `(result bool i32)`, or `(result string i32)` value")
  (file "<fixture>")
  (span
    (bytes 45 46)
    (range 5 10 5 11)
  )
  (expected "(result i32 i32), (result i64 i32), (result f64 i32), (result bool i32), or (result string i32)")
  (found "i32")
)