(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code UnsupportedGenericTypeParameter)
  (message "generic vector syntax is reserved but not supported in the current beta")
  (file "<fixture>")
  (span
    (bytes 31 36)
    (range 4 16 4 21)
  )
  (expected "(vec i32), (vec i64), (vec f64), (vec bool), or (vec string)")
  (found "(vec)")
  (hint "choose one current concrete vector family explicitly")
)