Auto merge of #122713 - matthiaskrgr:rollup-81grkpm, r=matthiaskrgr

Rollup of 11 pull requests

Successful merges:

 - #121258 (Reject overly generic assoc const binding types)
 - #121823 (never patterns: suggest `!` patterns on non-exhaustive matches)
 - #122060 (Stabilize `imported_main`)
 - #122158 (Provide structured suggestion for `#![feature(foo)]`)
 - #122642 (Improve wording of `Vec::swap_remove`)
 - #122675 (core: document default attribute stabilization)
 - #122687 (`NormalizesTo`: return nested goals to caller)
 - #122693 (Fix heading anchors in doc pages.)
 - #122699 (Fix a typo in the 1.77.0 relnotes)
 - #122700 (Remove redundant files, rename base riscv32 file)
 - #122701 (Detect allocator for box in `must_not_suspend` lint)

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

Author: bors

test-cargo-miri/tests/main.rs

@@ -1,3 +1 @@
-#![feature(imported_main)]
-
 use cargo_miri_test::main;

tests/pass/imported_main.rs

@@ -1,5 +1,3 @@
-#![feature(imported_main)]
-
 pub mod foo {
     pub fn mymain() {
         println!("Hello, world!");

tests/pass/main_fn.rs

@@ -1,5 +1,3 @@
-#![feature(imported_main)]
-
 mod foo {
     pub(crate) fn bar() {}
 }