Rollup of 8 pull requests
Successful merges:
- #59979 (to_xe_bytes for isize and usize returns an array of different size)
- #60491 (std: Update compiler-builtins crate)
- #60550 (Add tests for concrete const types)
- #60572 (Add test for #59972)
- #60627 (test for #50518)
- #60634 (Document + Cleanup lang_items.rs)
- #60641 (Instead of ICEing on incorrect pattern, use delay_span_bug)
- #60644 (Use `delay_span_bug` for "Failed to unify obligation")
Failed merges:
r? @ghost