(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code MatchSubjectTypeMismatch)
  (message "match subject must be `(option i32)`, `(option i64)`, `(option u32)`, `(option u64)`, `(option f64)`, `(option bool)`, `(option string)`, `(result i32 i32)`, `(result i64 i32)`, `(result u32 i32)`, `(result u64 i32)`, `(result f64 i32)`, `(result bool i32)`, `(result string i32)`, or a known enum")
  (file "<fixture>")
  (span
    (bytes 44 45)
    (range 5 10 5 11)
  )
  (expected "(option i32), (option i64), (option u32), (option u64), (option f64), (option bool), (option string), (result i32 i32), (result i64 i32), (result u32 i32), (result u64 i32), (result f64 i32), (result bool i32), (result string i32), or known enum")
  (found "i32")
)
