warning: variant `UTF8` is never constructed
  --> datafusion\core\tests\parquet\mod.rs:89:5
   |
71 | enum Scenario {
   |      -------- variant in this enum
...
89 |     UTF8,
   |     ^^^^
   |
   = note: `Scenario` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
   = note: `#[warn(dead_code)]` on by default