Remove feature gate from std and compiler

Author: Nadrieril

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)]

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)]

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)]

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)]