Auto merge of #142613 - workingjubilee:rollup-yuod2hg, r=workingjubilee

Rollup of 13 pull requests

Successful merges:

 - rust-lang/rust#138538 (Make performance description of String::{insert,insert_str,remove} more precise)
 - rust-lang/rust#141946 (std: refactor explanation of `NonNull`)
 - rust-lang/rust#142216 (Miscellaneous RefCell cleanups)
 - rust-lang/rust#142542 (Manually invalidate caches in SimplifyCfg.)
 - rust-lang/rust#142563 (Refine run-make test ignores due to unpredictable `i686-pc-windows-gnu` unwind mechanism)
 - rust-lang/rust#142570 (Reject union default field values)
 - rust-lang/rust#142584 (Handle same-crate macro for borrowck semicolon suggestion)
 - rust-lang/rust#142585 (Update books)
 - rust-lang/rust#142586 (Fold unnecessary `visit_struct_field_def` in AstValidator)
 - rust-lang/rust#142587 (Make sure to propagate result from `visit_expr_fields`)
 - rust-lang/rust#142595 (Revert overeager warning for misuse of `--print native-static-libs`)
 - rust-lang/rust#142598 (Set elf e_flags on ppc64 targets according to abi)
 - rust-lang/rust#142601 (Add a comment to `FORMAT_VERSION`.)

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

Author: bors