(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code IndexOnNonArray)
  (message "`index` requires an array value")
  (file "<fixture>")
  (span
    (bytes 44 45)
    (range 5 10 5 11)
  )
  (expected "(array i32 N), (array i64 N), (array u32 N), (array u64 N), (array f64 N), (array bool N), (array string N), `(array KnownEnum N)`, or `(array KnownStruct N)`")
  (found "i32")
)