| error: missing #[repr(...)] attribute | |
| --> tests/ui/missing_repr.rs:3:10 | |
| | | |
| 3 | #[derive(Serialize_repr)] | |
| | ^^^^^^^^^^^^^^ | |
| | | |
| = note: this error originates in the derive macro `Serialize_repr` (in Nightly builds, run with -Z macro-backtrace for more info) |