Auto merge of #137143 - matthiaskrgr:rollup-9hapmyd, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - #136986 (Apply unsafe_op_in_unsafe_fn to the standard library)
 - #137012 (add docs and ut for bootstrap util cc-detect)
 - #137072 (Load all builtin targets at once instead of one by one in check-cfg)
 - #137102 (Rework `name_regions` to not rely on reverse scc graph for non-member-constrain usages)
 - #137112 (Don't project into `NonNull` when dropping a `Box`)
 - #137114 (Add an example for `std::error::Error`)
 - #137117 (Fix test that relies on error language)
 - #137119 (fix broken `x {doc, build} core`)

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

Author: bors

tests/fail/panic/panic_abort1.rs

@@ -1,6 +1,6 @@
 //@error-in-other-file: the program aborted execution
 //@normalize-stderr-test: "\| +\^+" -> "| ^"
-//@normalize-stderr-test: "libc::abort\(\);|core::intrinsics::abort\(\);" -> "ABORT();"
+//@normalize-stderr-test: "unsafe \{ libc::abort\(\); \}|core::intrinsics::abort\(\);" -> "ABORT();"
 //@compile-flags: -C panic=abort
 
 fn main() {

tests/fail/panic/panic_abort2.rs

@@ -1,6 +1,6 @@
 //@error-in-other-file: the program aborted execution
 //@normalize-stderr-test: "\| +\^+" -> "| ^"
-//@normalize-stderr-test: "libc::abort\(\);|core::intrinsics::abort\(\);" -> "ABORT();"
+//@normalize-stderr-test: "unsafe \{ libc::abort\(\); \}|core::intrinsics::abort\(\);" -> "ABORT();"
 //@compile-flags: -C panic=abort
 
 fn main() {

tests/fail/panic/panic_abort3.rs

@@ -1,6 +1,6 @@
 //@error-in-other-file: the program aborted execution
 //@normalize-stderr-test: "\| +\^+" -> "| ^"
-//@normalize-stderr-test: "libc::abort\(\);|core::intrinsics::abort\(\);" -> "ABORT();"
+//@normalize-stderr-test: "unsafe \{ libc::abort\(\); \}|core::intrinsics::abort\(\);" -> "ABORT();"
 //@compile-flags: -C panic=abort
 
 fn main() {

tests/fail/panic/panic_abort4.rs

@@ -1,6 +1,6 @@
 //@error-in-other-file: the program aborted execution
 //@normalize-stderr-test: "\| +\^+" -> "| ^"
-//@normalize-stderr-test: "libc::abort\(\);|core::intrinsics::abort\(\);" -> "ABORT();"
+//@normalize-stderr-test: "unsafe \{ libc::abort\(\); \}|core::intrinsics::abort\(\);" -> "ABORT();"
 //@compile-flags: -C panic=abort
 
 fn main() {