Auto merge of #84864 - Mark-Simulacrum:stable-next, r=Mark-Simulacrum 1.52.0

[stable] 1.52.0 release

This includes the release notes (#84183) as well as cherry-picked commits from:

* [beta] revert PR #77885 #84710
* [beta] remove assert_matches #84759
* Revert PR 81473 to resolve (on beta) issues 81626 and 81658. #83171
* [beta] rustdoc revert deref recur #84868
*  Fix ICE of for-loop mut borrowck where no suggestions are available #83401

Additionally in "fresh work" we're also:

* reverting: directly expose copy and copy_nonoverlapping intrinsics #81238 to avoid https://github.com/rust-lang/rust/issues/84297 on 1.52

2 files changed, 0 insertions, 113 deletions

diff --git a/src/test/ui/lint/dead-code/write-only-field.rs b/src/test/ui/lint/dead-code/write-only-field.rs
deleted file mode 100644
index 7b3f1e9f5b6..00000000000
--- a/src/test/ui/lint/dead-code/write-only-field.rs
+++ /dev/null
@@ -1,69 +0,0 @@
-#![deny(dead_code)]
-
-struct S {
-    f: i32, //~ ERROR: field is never read
-    sub: Sub, //~ ERROR: field is never read
-}
-
-struct Sub {
-    f: i32, //~ ERROR: field is never read
-}
-
-fn field_write(s: &mut S) {
-    s.f = 1;
-    s.sub.f = 2;
-}
-
-fn main() {
-    let mut s = S { f: 0, sub: Sub { f: 0 } };
-    field_write(&mut s);
-
-    auto_deref();
-    nested_boxes();
-}
-
-fn auto_deref() {
-    struct E {
-        x: bool,
-        y: bool, //~ ERROR: field is never read
-    }
-
-    struct P<'a> {
-        e: &'a mut E
-    }
-
-    impl P<'_> {
-        fn f(&mut self) {
-            self.e.x = true;
-            self.e.y = true;
-        }
-    }
-
-    let mut e = E { x: false, y: false };
-    let mut p = P { e: &mut e };
-    p.f();
-    assert!(e.x);
-}
-
-fn nested_boxes() {
-    struct A {
-        b: Box<B>,
-    }
-
-    struct B {
-        c: Box<C>,
-    }
-
-    struct C {
-        u: u32, //~ ERROR: field is never read
-        v: u32, //~ ERROR: field is never read
-    }
-
-    let mut a = A {
-        b: Box::new(B {
-            c: Box::new(C { u: 0, v: 0 }),
-        }),
-    };
-    a.b.c.v = 10;
-    a.b.c = Box::new(C { u: 1, v: 2 });
-}
diff --git a/src/test/ui/lint/dead-code/write-only-field.stderr b/src/test/ui/lint/dead-code/write-only-field.stderr
deleted file mode 100644
index a191d22c8b9..00000000000
--- a/src/test/ui/lint/dead-code/write-only-field.stderr
+++ /dev/null
@@ -1,44 +0,0 @@
-error: field is never read: `f`
-  --> $DIR/write-only-field.rs:4:5
-   |
-LL |     f: i32,
-   |     ^^^^^^
-   |
-note: the lint level is defined here
-  --> $DIR/write-only-field.rs:1:9
-   |
-LL | #![deny(dead_code)]
-   |         ^^^^^^^^^
-
-error: field is never read: `sub`
-  --> $DIR/write-only-field.rs:5:5
-   |
-LL |     sub: Sub,
-   |     ^^^^^^^^
-
-error: field is never read: `f`
-  --> $DIR/write-only-field.rs:9:5
-   |
-LL |     f: i32,
-   |     ^^^^^^
-
-error: field is never read: `y`
-  --> $DIR/write-only-field.rs:28:9
-   |
-LL |         y: bool,
-   |         ^^^^^^^
-
-error: field is never read: `u`
-  --> $DIR/write-only-field.rs:58:9
-   |
-LL |         u: u32,
-   |         ^^^^^^
-
-error: field is never read: `v`
-  --> $DIR/write-only-field.rs:59:9
-   |
-LL |         v: u32,
-   |         ^^^^^^
-
-error: aborting due to 6 previous errors
-