Prefer min_exhaustive_patterns in core & std

Author: Nadrieril

library/core/src/lib.rs

@@ -201,6 +201,8 @@
 //
 // Language features:
 // tidy-alphabetical-start
+#![cfg_attr(bootstrap, feature(exhaustive_patterns))]
+#![cfg_attr(not(bootstrap), feature(min_exhaustive_patterns))]
 #![feature(abi_unadjusted)]
 #![feature(adt_const_params)]
 #![feature(allow_internal_unsafe)]
@@ -226,7 +228,6 @@
 #![feature(doc_cfg_hide)]
 #![feature(doc_notable_trait)]
 #![feature(effects)]
-#![feature(exhaustive_patterns)]
 #![feature(extern_types)]
 #![feature(fundamental)]
 #![feature(generic_arg_infer)]

library/std/src/lib.rs

@@ -266,7 +266,9 @@
 //
 // Language features:
 // tidy-alphabetical-start
+#![cfg_attr(bootstrap, feature(exhaustive_patterns))]
 #![cfg_attr(not(bootstrap), feature(cfg_sanitizer_cfi))]
+#![cfg_attr(not(bootstrap), feature(min_exhaustive_patterns))]
 #![feature(alloc_error_handler)]
 #![feature(allocator_internals)]
 #![feature(allow_internal_unsafe)]
@@ -284,7 +286,6 @@
 #![feature(doc_masked)]
 #![feature(doc_notable_trait)]
 #![feature(dropck_eyepatch)]
-#![feature(exhaustive_patterns)]
 #![feature(if_let_guard)]
 #![feature(intra_doc_pointers)]
 #![feature(lang_items)]