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a811bb631a
Display ?Sized, const, and lifetime parameters in trait item suggestions across a crate boundary context: rust-lang/rust#145929 This fixes the MetaSized issue and adds const generics and early bound lifetimes. Late bound lifetimes are harder because they aren't returned by `generics_of`. I'm going to look into it, but there's no guarantee I'll be successful. Fixes https://github.com/rust-lang/rust/issues/146404. r? `@BoxyUwu`
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.