rust/compiler/rustc_next_trait_solver
bors 63f6845e57 Auto merge of #144458 - compiler-errors:no-witness-mini, r=lcnr
Remove the witness type from coroutine *args* (without actually removing the type)

This does as much of rust-lang/rust#144157 as we can without having to break rust-lang/rust#143545 and/or introduce some better way of handling higher ranked assumptions.

Namely, it:
* Stalls coroutines based off of the *coroutine* type rather than the witness type.
* Reworks the dtorck constraint hack to not rely on the witness type.
* Removes the witness type from the args of the coroutine, eagerly creating the type for nested obligations when needed (auto/clone impls).

I'll experiment with actually removing the witness type in a follow-up.

r? lcnr
2025-08-01 21:07:49 +00:00
..
2025-07-31 19:58:04 +10:00