{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"532..621:"}]}
            532..621: `derive(CoercePointee)` requires `T` to be marked `?Sized`
            441..530: exactly one generic type parameter must be marked as `#[pointee]` to derive `CoercePointee` traits
            623..690: `derive(CoercePointee)` requires `T` to be marked `?Sized`"#]],