Auto merge of #71689 - Dylan-DPC:rollup-8nyuwm1, r=Dylan-DPC

Auto merge of #71689 - Dylan-DPC:rollup-8nyuwm1, r=Dylan-DPC

Rollup of 6 pull requests

Successful merges:

 - #71507 (Document unsafety in core::ptr)
 - #71572 (test iterator chain type length blowup)
 - #71617 (Suggest `into` instead of `try_into` if possible with int types)
 - #71627 (Fix wrong argument in autoderef process)
 - #71678 (Add an index page for nightly rustc docs.)
 - #71680 (Fix doc link to Eq trait from PartialEq trait)

Failed merges:

 - #71597 (Rename Unique::empty() -> Unique::dangling())

r? @ghost