Rollup of 10 pull requests#109428

Closed

Dylan-DPC wants to merge 31 commits intorust-lang:masterfrom

Dylan-DPC:rollup-jia56fn

Commits on Jan 4, 2023

Link to Option/Result for `Iterator::sum/product`
clubby789
committed

Commits on Feb 27, 2023

Nested impl traits trigger opaque_hidden_inferred_bound too much
compiler-errors
committed

Commits on Mar 16, 2023

replace usage of `evaluate_goal` with a new `add_goal`
BoxyUwU
committed

Commits on Mar 18, 2023

move Option::as_slice to intrinsic
llogiq
committed

Commits on Mar 19, 2023

Commits on Mar 21, 2023