Update std and compiler

Author: Nadrieril

Diff for: compiler/rustc_errors/src/diagnostic_impls.rs

@@ -64,6 +64,7 @@ macro_rules! into_diag_arg_for_number {
             impl IntoDiagArg for $ty {
                 fn into_diag_arg(self) -> DiagArgValue {
                     // Convert to a string if it won't fit into `Number`.
+                    #[allow(irrefutable_let_patterns)]
                     if let Ok(n) = TryInto::<i32>::try_into(self) {
                         DiagArgValue::Number(n)
                     } else {

Diff for: compiler/rustc_middle/src/lib.rs

@@ -24,7 +24,7 @@
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![doc(rust_logo)]
-#![feature(min_exhaustive_patterns)]
+#![cfg_attr(bootstrap, feature(min_exhaustive_patterns))]
 #![feature(rustdoc_internals)]
 #![feature(allocator_api)]
 #![feature(array_windows)]

Diff for: compiler/rustc_target/src/lib.rs

@@ -9,7 +9,7 @@
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![doc(rust_logo)]
-#![feature(min_exhaustive_patterns)]
+#![cfg_attr(bootstrap, feature(min_exhaustive_patterns))]
 #![feature(rustdoc_internals)]
 #![feature(assert_matches)]
 #![feature(iter_intersperse)]

Diff for: compiler/rustc_transmute/src/layout/nfa.rs

@@ -86,6 +86,7 @@ where
     pub(crate) fn from_tree(tree: Tree<!, R>) -> Result<Self, Uninhabited> {
         Ok(match tree {
             Tree::Byte(b) => Self::from_byte(b),
+            #[cfg(bootstrap)]
             Tree::Def(..) => unreachable!(),
             Tree::Ref(r) => Self::from_ref(r),
             Tree::Alt(alts) => {

Diff for: compiler/rustc_type_ir/src/fold.rs

@@ -87,6 +87,7 @@ pub trait TypeFoldable<I: Interner>: TypeVisitable<I> {
     fn fold_with<F: TypeFolder<I>>(self, folder: &mut F) -> Self {
         match self.try_fold_with(folder) {
             Ok(t) => t,
+            #[cfg(bootstrap)]
             Err(e) => match e {},
         }
     }
@@ -111,6 +112,7 @@ pub trait TypeSuperFoldable<I: Interner>: TypeFoldable<I> {
     fn super_fold_with<F: TypeFolder<I>>(self, folder: &mut F) -> Self {
         match self.try_super_fold_with(folder) {
             Ok(t) => t,
+            #[cfg(bootstrap)]
             Err(e) => match e {},
         }
     }

Diff for: library/core/src/lib.rs

@@ -204,6 +204,7 @@
 //
 // Language features:
 // tidy-alphabetical-start
+#![cfg_attr(bootstrap, feature(min_exhaustive_patterns))]
 #![feature(abi_unadjusted)]
 #![feature(adt_const_params)]
 #![feature(allow_internal_unsafe)]
@@ -239,7 +240,6 @@
 #![feature(let_chains)]
 #![feature(link_llvm_intrinsics)]
 #![feature(macro_metavar_expr)]
-#![feature(min_exhaustive_patterns)]
 #![feature(min_specialization)]
 #![feature(multiple_supertrait_upcastable)]
 #![feature(must_not_suspend)]

Diff for: library/std/src/lib.rs

@@ -270,6 +270,7 @@
 //
 // Language features:
 // tidy-alphabetical-start
+#![cfg_attr(bootstrap, feature(min_exhaustive_patterns))]
 #![feature(alloc_error_handler)]
 #![feature(allocator_internals)]
 #![feature(allow_internal_unsafe)]
@@ -294,7 +295,6 @@
 #![feature(let_chains)]
 #![feature(link_cfg)]
 #![feature(linkage)]
-#![feature(min_exhaustive_patterns)]
 #![feature(min_specialization)]
 #![feature(must_not_suspend)]
 #![feature(needs_panic_runtime)]