generalize hr alias: avoid unconstrainable infer vars fixes https://github.com/rust-lang/trait-system-refactor-initiative/issues/108 see inline comments for more details r? `@compiler-errors` cc `@BoxyUwU`
generalize hr alias: avoid unconstrainable infer vars fixes https://github.com/rust-lang/trait-system-refactor-initiative/issues/108 see inline comments for more details r? `@compiler-errors` cc `@BoxyUwU`