(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code MatchArmTypeMismatch)
  (message "match arm final expressions must have the same type")
  (file "<fixture>")
  (span
    (bytes 123 128)
    (range 9 7 9 12)
  )
  (expected "i32")
  (found "bool")
  (related
    (span
      (file "<fixture>")
      (bytes 96 103)
      (range 7 7 7 14)
      (message "first arm result type")
    )
  )
)