Update std and compiler

compiler/rustc_errors/src/diagnostic_impls.rs

@@ -66,6 +66,7 @@ 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 {

compiler/rustc_middle/src/lib.rs

@@ -28,6 +28,7 @@
 #![allow(rustc::diagnostic_outside_of_impl)]
 #![allow(rustc::potential_query_instability)]
 #![allow(rustc::untranslatable_diagnostic)]
+#![cfg_attr(bootstrap, feature(min_exhaustive_patterns))]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![doc(rust_logo)]
 #![feature(allocator_api)]
@@ -48,7 +49,6 @@
 #![feature(iter_from_coroutine)]
 #![feature(let_chains)]
 #![feature(macro_metavar_expr)]
-#![feature(min_exhaustive_patterns)]
 #![feature(min_specialization)]
 #![feature(negative_impls)]
 #![feature(never_type)]

compiler/rustc_target/src/lib.rs

@@ -9,12 +9,12 @@
 
 // tidy-alphabetical-start
 #![allow(internal_features)]
+#![cfg_attr(bootstrap, feature(min_exhaustive_patterns))]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![doc(rust_logo)]
 #![feature(assert_matches)]
 #![feature(iter_intersperse)]
 #![feature(let_chains)]
-#![feature(min_exhaustive_patterns)]
 #![feature(rustc_attrs)]
 #![feature(rustdoc_internals)]
 // tidy-alphabetical-end

compiler/rustc_transmute/src/layout/nfa.rs

@@ -87,6 +87,7 @@ 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) => {

compiler/rustc_type_ir/src/fold.rs

@@ -91,6 +91,7 @@ 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 {},
         }
     }
@@ -115,6 +116,7 @@ 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 {},
         }
     }

library/core/src/lib.rs

@@ -192,6 +192,7 @@
 //
 // Language features:
 // tidy-alphabetical-start
+#![cfg_attr(bootstrap, feature(min_exhaustive_patterns))]
 #![feature(abi_unadjusted)]
 #![feature(adt_const_params)]
 #![feature(allow_internal_unsafe)]
@@ -225,7 +226,6 @@
 #![feature(link_llvm_intrinsics)]
 #![feature(macro_metavar_expr)]
 #![feature(marker_trait_attr)]
-#![feature(min_exhaustive_patterns)]
 #![feature(min_specialization)]
 #![feature(multiple_supertrait_upcastable)]
 #![feature(must_not_suspend)]

library/std/src/lib.rs

@@ -272,6 +272,7 @@
 //
 // Language features:
 // tidy-alphabetical-start
+#![cfg_attr(bootstrap, feature(min_exhaustive_patterns))]
 #![feature(alloc_error_handler)]
 #![feature(allocator_internals)]
 #![feature(allow_internal_unsafe)]
@@ -299,7 +300,6 @@
 #![feature(link_cfg)]
 #![feature(linkage)]
 #![feature(macro_metavar_expr_concat)]
-#![feature(min_exhaustive_patterns)]
 #![feature(min_specialization)]
 #![feature(must_not_suspend)]
 #![feature(needs_panic_runtime)]