(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code UnsupportedUnsafeOperation)
  (message "unsafe operation `ffi_call` is outside the v1.6 unsafe contract")
  (file "<fixture>")
  (span
    (bytes 49 63)
    (range 6 5 6 19)
  )
  (hint "raw memory operations are not supported by v1.6 unsafe blocks")
  (related
    (span
      (file "<fixture>")
      (bytes 50 58)
      (range 6 6 6 14)
      (message "unsafe operation head")
    )
  )
)