error: Generics are not supported for `derive(Metrics)` macro --> tests/ui/metrics/unsupported_generics.rs:4:27 | 4 | struct UnsupportedLifetime<'a> { | ^^^^ error: Generics are not supported for `derive(Metrics)` macro --> tests/ui/metrics/unsupported_generics.rs:9:29 | 9 | struct UnsupportedConstParam { | ^^^^^^^^^^^^^^^^ error: Generics are not supported for `derive(Metrics)` macro --> tests/ui/metrics/unsupported_generics.rs:14:28 | 14 | struct UnsupportedTypeParam { | ^^^