Auto merge of #134294 - matthiaskrgr:rollup-anh6io8, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - #134252 (Fix `Path::is_absolute` on Hermit)
 - #134254 (Fix building `std` for Hermit after `c_char` change)
 - #134255 (Update includes in `/library/core/src/error.rs`.)
 - #134261 (Document the symbol Visibility enum)
 - #134262 (Arbitrary self types v2: adjust diagnostic.)
 - #134265 (Rename `ty_def_id` so people will stop using it by accident)
 - #134271 (Arbitrary self types v2: better feature gate test)
 - #134274 (Add check-pass test for `&raw`)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors