Auto merge of #2078 - RalfJung:rustup, r=RalfJung

rustup

rust-lang/rust#93313 somehow made it so that this does not have to be mutable any more...

rust-version

@@ -1 +1 @@
-27af5175497936ea3413bef5816e7c0172514b9c
+51ea9bb29b07d76c5a7167d054b54f4eb7f5b44e

tests/compile-fail/never_transmute_void.rs

@@ -4,15 +4,18 @@
 #![feature(never_type)]
 #![allow(unused, invalid_value)]
 
-enum Void {}
+mod m {
+    enum VoidI {}
+    pub struct Void(VoidI);
 
-fn f(v: Void) -> ! {
-    match v {} //~ ERROR entering unreachable code
+    pub fn f(v: Void) -> ! {
+        match v.0 {} //~ ERROR entering unreachable code
+    }
 }
 
 fn main() {
-    let v: Void = unsafe {
-        std::mem::transmute::<(), Void>(())
+    let v = unsafe {
+        std::mem::transmute::<(), m::Void>(())
     };
-    f(v); //~ inside `main`
+    m::f(v); //~ inside `main`
 }

tests/run-pass/async-fn.rs

@@ -29,7 +29,7 @@ fn never() -> Never {
 }
 
 async fn includes_never(crash: bool, x: u32) -> u32 {
-    let mut result = async { x * x }.await;
+    let result = async { x * x }.await;
     if !crash {
         return result;
     }