diff --git a/compiler/rustc_ast/src/lib.rs b/compiler/rustc_ast/src/lib.rs index 4d3620ee8b0..bd7a85b07a0 100644 --- a/compiler/rustc_ast/src/lib.rs +++ b/compiler/rustc_ast/src/lib.rs @@ -15,7 +15,7 @@ #![feature(if_let_guard)] #![cfg_attr(bootstrap, feature(label_break_value))] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(negative_impls)] #![feature(slice_internals)] diff --git a/compiler/rustc_ast_lowering/src/lib.rs b/compiler/rustc_ast_lowering/src/lib.rs index 409ee55268c..9ac09b5c8b3 100644 --- a/compiler/rustc_ast_lowering/src/lib.rs +++ b/compiler/rustc_ast_lowering/src/lib.rs @@ -32,7 +32,7 @@ #![feature(box_patterns)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(never_type)] #![recursion_limit = "256"] #![allow(rustc::potential_query_instability)] diff --git a/compiler/rustc_ast_passes/src/lib.rs b/compiler/rustc_ast_passes/src/lib.rs index af25982e288..8aa9d57f046 100644 --- a/compiler/rustc_ast_passes/src/lib.rs +++ b/compiler/rustc_ast_passes/src/lib.rs @@ -9,7 +9,7 @@ #![feature(if_let_guard)] #![feature(iter_is_partitioned)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![recursion_limit = "256"] #[macro_use] diff --git a/compiler/rustc_attr/src/lib.rs b/compiler/rustc_attr/src/lib.rs index 053f848aacb..52e65a9c774 100644 --- a/compiler/rustc_attr/src/lib.rs +++ b/compiler/rustc_attr/src/lib.rs @@ -5,7 +5,7 @@ //! to this crate. #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![deny(rustc::untranslatable_diagnostic)] #![deny(rustc::diagnostic_outside_of_impl)] diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs index ec652f85217..86da87d0603 100644 --- a/compiler/rustc_borrowck/src/lib.rs +++ b/compiler/rustc_borrowck/src/lib.rs @@ -3,7 +3,7 @@ #![allow(rustc::potential_query_instability)] #![feature(box_patterns)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(never_type)] #![feature(rustc_attrs)] diff --git a/compiler/rustc_builtin_macros/src/lib.rs b/compiler/rustc_builtin_macros/src/lib.rs index 280fa704511..8aeb3b82a9c 100644 --- a/compiler/rustc_builtin_macros/src/lib.rs +++ b/compiler/rustc_builtin_macros/src/lib.rs @@ -9,7 +9,7 @@ #![feature(if_let_guard)] #![feature(is_sorted)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(proc_macro_internals)] #![feature(proc_macro_quote)] #![recursion_limit = "256"] diff --git a/compiler/rustc_codegen_llvm/src/lib.rs b/compiler/rustc_codegen_llvm/src/lib.rs index 334425ae55b..42c65e04e3b 100644 --- a/compiler/rustc_codegen_llvm/src/lib.rs +++ b/compiler/rustc_codegen_llvm/src/lib.rs @@ -7,7 +7,7 @@ #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")] #![feature(hash_raw_entry)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(extern_types)] #![feature(once_cell)] #![feature(iter_intersperse)] diff --git a/compiler/rustc_codegen_ssa/src/lib.rs b/compiler/rustc_codegen_ssa/src/lib.rs index 4ea75dba471..e736b2aba9c 100644 --- a/compiler/rustc_codegen_ssa/src/lib.rs +++ b/compiler/rustc_codegen_ssa/src/lib.rs @@ -1,7 +1,7 @@ #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")] #![feature(box_patterns)] #![feature(try_blocks)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(once_cell)] #![feature(associated_type_bounds)] #![feature(strict_provenance)] diff --git a/compiler/rustc_const_eval/src/lib.rs b/compiler/rustc_const_eval/src/lib.rs index 72ac6af685d..9f47d302a0c 100644 --- a/compiler/rustc_const_eval/src/lib.rs +++ b/compiler/rustc_const_eval/src/lib.rs @@ -10,7 +10,7 @@ Rust MIR: a lowered representation of Rust. #![feature(decl_macro)] #![feature(exact_size_is_empty)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(map_try_insert)] #![feature(min_specialization)] #![feature(slice_ptr_get)] diff --git a/compiler/rustc_data_structures/src/lib.rs b/compiler/rustc_data_structures/src/lib.rs index a7429ed008f..56f7823efe0 100644 --- a/compiler/rustc_data_structures/src/lib.rs +++ b/compiler/rustc_data_structures/src/lib.rs @@ -13,7 +13,7 @@ #![feature(cell_leak)] #![feature(control_flow_enum)] #![feature(extend_one)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(hash_raw_entry)] #![feature(hasher_prefixfree_extras)] #![feature(maybe_uninit_uninit_array)] diff --git a/compiler/rustc_driver/src/lib.rs b/compiler/rustc_driver/src/lib.rs index d6f51d7eee1..8fb9508194b 100644 --- a/compiler/rustc_driver/src/lib.rs +++ b/compiler/rustc_driver/src/lib.rs @@ -5,7 +5,7 @@ //! This API is completely unstable and subject to change. #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(once_cell)] #![recursion_limit = "256"] #![allow(rustc::potential_query_instability)] diff --git a/compiler/rustc_errors/src/lib.rs b/compiler/rustc_errors/src/lib.rs index 1b24f07e689..c3e78209612 100644 --- a/compiler/rustc_errors/src/lib.rs +++ b/compiler/rustc_errors/src/lib.rs @@ -7,7 +7,7 @@ #![feature(if_let_guard)] #![feature(adt_const_params)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(never_type)] #![feature(result_option_inspect)] #![feature(rustc_attrs)] diff --git a/compiler/rustc_expand/src/lib.rs b/compiler/rustc_expand/src/lib.rs index ac0e200b1b7..ffc9abe64d2 100644 --- a/compiler/rustc_expand/src/lib.rs +++ b/compiler/rustc_expand/src/lib.rs @@ -3,7 +3,7 @@ #![feature(associated_type_defaults)] #![feature(if_let_guard)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(macro_metavar_expr)] #![feature(proc_macro_diagnostic)] #![feature(proc_macro_internals)] diff --git a/compiler/rustc_hir/src/lib.rs b/compiler/rustc_hir/src/lib.rs index 1b33cb9c2da..946da9265ba 100644 --- a/compiler/rustc_hir/src/lib.rs +++ b/compiler/rustc_hir/src/lib.rs @@ -5,7 +5,7 @@ #![feature(associated_type_defaults)] #![feature(closure_track_caller)] #![feature(const_btree_new)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(once_cell)] #![feature(min_specialization)] #![feature(never_type)] diff --git a/compiler/rustc_incremental/src/lib.rs b/compiler/rustc_incremental/src/lib.rs index 1e88e8091c3..2c9e21f769f 100644 --- a/compiler/rustc_incremental/src/lib.rs +++ b/compiler/rustc_incremental/src/lib.rs @@ -2,7 +2,7 @@ #![deny(missing_docs)] #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![recursion_limit = "256"] #![allow(rustc::potential_query_instability)] diff --git a/compiler/rustc_index/src/lib.rs b/compiler/rustc_index/src/lib.rs index aa34673de81..a00d7bd6801 100644 --- a/compiler/rustc_index/src/lib.rs +++ b/compiler/rustc_index/src/lib.rs @@ -3,7 +3,7 @@ #![feature(allow_internal_unstable)] #![feature(bench_black_box)] #![feature(extend_one)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(new_uninit)] #![feature(step_trait)] diff --git a/compiler/rustc_infer/src/lib.rs b/compiler/rustc_infer/src/lib.rs index 931ebca7d01..ef60d2c9188 100644 --- a/compiler/rustc_infer/src/lib.rs +++ b/compiler/rustc_infer/src/lib.rs @@ -19,7 +19,7 @@ #![feature(extend_one)] #![cfg_attr(bootstrap, feature(label_break_value))] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(never_type)] #![feature(try_blocks)] diff --git a/compiler/rustc_interface/src/lib.rs b/compiler/rustc_interface/src/lib.rs index 1a8d619fafb..41cd7b0e9b1 100644 --- a/compiler/rustc_interface/src/lib.rs +++ b/compiler/rustc_interface/src/lib.rs @@ -1,5 +1,5 @@ #![feature(box_patterns)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(internal_output_capture)] #![feature(thread_spawn_unchecked)] #![feature(once_cell)] diff --git a/compiler/rustc_lint/src/lib.rs b/compiler/rustc_lint/src/lib.rs index 2a22a6e5be1..c760e435699 100644 --- a/compiler/rustc_lint/src/lib.rs +++ b/compiler/rustc_lint/src/lib.rs @@ -34,7 +34,7 @@ #![feature(iter_intersperse)] #![feature(iter_order_by)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(never_type)] #![recursion_limit = "256"] diff --git a/compiler/rustc_macros/src/lib.rs b/compiler/rustc_macros/src/lib.rs index 20ee5dfc727..2c027d754da 100644 --- a/compiler/rustc_macros/src/lib.rs +++ b/compiler/rustc_macros/src/lib.rs @@ -1,5 +1,5 @@ #![feature(allow_internal_unstable)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(never_type)] #![feature(proc_macro_diagnostic)] #![feature(proc_macro_span)] diff --git a/compiler/rustc_metadata/src/lib.rs b/compiler/rustc_metadata/src/lib.rs index ba6f1e4a3a5..6f5604b7e11 100644 --- a/compiler/rustc_metadata/src/lib.rs +++ b/compiler/rustc_metadata/src/lib.rs @@ -5,7 +5,7 @@ #![cfg_attr(bootstrap, feature(generic_associated_types))] #![feature(iter_from_generator)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(once_cell)] #![feature(proc_macro_internals)] #![feature(macro_metavar_expr)] diff --git a/compiler/rustc_middle/src/lib.rs b/compiler/rustc_middle/src/lib.rs index ea08879cb53..01b9277b983 100644 --- a/compiler/rustc_middle/src/lib.rs +++ b/compiler/rustc_middle/src/lib.rs @@ -40,7 +40,7 @@ #![feature(new_uninit)] #![feature(once_cell)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(trusted_len)] #![feature(type_alias_impl_trait)] diff --git a/compiler/rustc_mir_build/src/lib.rs b/compiler/rustc_mir_build/src/lib.rs index 11cd2a9aa4d..0c0a2fe9c9e 100644 --- a/compiler/rustc_mir_build/src/lib.rs +++ b/compiler/rustc_mir_build/src/lib.rs @@ -6,7 +6,7 @@ #![feature(control_flow_enum)] #![feature(if_let_guard)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(once_cell)] #![recursion_limit = "256"] diff --git a/compiler/rustc_mir_dataflow/src/lib.rs b/compiler/rustc_mir_dataflow/src/lib.rs index 62b712f7b8d..b45c32ee986 100644 --- a/compiler/rustc_mir_dataflow/src/lib.rs +++ b/compiler/rustc_mir_dataflow/src/lib.rs @@ -1,7 +1,7 @@ #![feature(associated_type_defaults)] #![feature(box_patterns)] #![feature(exact_size_is_empty)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(once_cell)] #![feature(stmt_expr_attributes)] diff --git a/compiler/rustc_mir_transform/src/lib.rs b/compiler/rustc_mir_transform/src/lib.rs index 162f7d969b1..e6fc8559571 100644 --- a/compiler/rustc_mir_transform/src/lib.rs +++ b/compiler/rustc_mir_transform/src/lib.rs @@ -1,7 +1,7 @@ #![allow(rustc::potential_query_instability)] #![feature(box_patterns)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(map_try_insert)] #![feature(min_specialization)] #![feature(never_type)] diff --git a/compiler/rustc_monomorphize/src/lib.rs b/compiler/rustc_monomorphize/src/lib.rs index 3afff7bcabf..ba6ce9fd40f 100644 --- a/compiler/rustc_monomorphize/src/lib.rs +++ b/compiler/rustc_monomorphize/src/lib.rs @@ -1,6 +1,6 @@ #![feature(array_windows)] #![feature(control_flow_enum)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![recursion_limit = "256"] #![allow(rustc::potential_query_instability)] #![deny(rustc::untranslatable_diagnostic)] diff --git a/compiler/rustc_parse/src/lib.rs b/compiler/rustc_parse/src/lib.rs index 3c88e1ef377..a37327f4294 100644 --- a/compiler/rustc_parse/src/lib.rs +++ b/compiler/rustc_parse/src/lib.rs @@ -4,7 +4,7 @@ #![feature(box_patterns)] #![feature(if_let_guard)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(never_type)] #![feature(rustc_attrs)] #![recursion_limit = "256"] diff --git a/compiler/rustc_passes/src/lib.rs b/compiler/rustc_passes/src/lib.rs index 7b2f83958af..39ebb8db21c 100644 --- a/compiler/rustc_passes/src/lib.rs +++ b/compiler/rustc_passes/src/lib.rs @@ -8,7 +8,7 @@ #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")] #![feature(iter_intersperse)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(map_try_insert)] #![feature(min_specialization)] #![feature(try_blocks)] diff --git a/compiler/rustc_privacy/src/lib.rs b/compiler/rustc_privacy/src/lib.rs index 92ef61fe64c..48ab31ab92d 100644 --- a/compiler/rustc_privacy/src/lib.rs +++ b/compiler/rustc_privacy/src/lib.rs @@ -1,7 +1,7 @@ #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")] #![feature(associated_type_defaults)] #![feature(control_flow_enum)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(rustc_private)] #![feature(try_blocks)] #![recursion_limit = "256"] diff --git a/compiler/rustc_query_system/src/lib.rs b/compiler/rustc_query_system/src/lib.rs index 8a88b5c3340..f92c3831f26 100644 --- a/compiler/rustc_query_system/src/lib.rs +++ b/compiler/rustc_query_system/src/lib.rs @@ -1,7 +1,7 @@ #![feature(assert_matches)] #![feature(core_intrinsics)] #![feature(hash_raw_entry)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(extern_types)] #![allow(rustc::potential_query_instability)] diff --git a/compiler/rustc_resolve/src/lib.rs b/compiler/rustc_resolve/src/lib.rs index 749a78a7552..54a7f416ce6 100644 --- a/compiler/rustc_resolve/src/lib.rs +++ b/compiler/rustc_resolve/src/lib.rs @@ -12,7 +12,7 @@ #![feature(if_let_guard)] #![feature(iter_intersperse)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(never_type)] #![recursion_limit = "256"] #![allow(rustdoc::private_intra_doc_links)] diff --git a/compiler/rustc_save_analysis/src/lib.rs b/compiler/rustc_save_analysis/src/lib.rs index ebe44a56449..ce03c2a8ad0 100644 --- a/compiler/rustc_save_analysis/src/lib.rs +++ b/compiler/rustc_save_analysis/src/lib.rs @@ -1,6 +1,6 @@ #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")] #![feature(if_let_guard)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![recursion_limit = "256"] #![allow(rustc::potential_query_instability)] #![feature(never_type)] diff --git a/compiler/rustc_serialize/src/lib.rs b/compiler/rustc_serialize/src/lib.rs index 91f4cfaf5ac..fa9c7bd54c3 100644 --- a/compiler/rustc_serialize/src/lib.rs +++ b/compiler/rustc_serialize/src/lib.rs @@ -14,7 +14,7 @@ Core encoding and decoding interfaces. #![feature(min_specialization)] #![feature(core_intrinsics)] #![feature(maybe_uninit_slice)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(new_uninit)] #![feature(allocator_api)] #![cfg_attr(test, feature(test))] diff --git a/compiler/rustc_session/src/lib.rs b/compiler/rustc_session/src/lib.rs index b9b243f6f08..f6bab775e76 100644 --- a/compiler/rustc_session/src/lib.rs +++ b/compiler/rustc_session/src/lib.rs @@ -1,6 +1,6 @@ #![feature(if_let_guard)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(never_type)] #![feature(once_cell)] diff --git a/compiler/rustc_span/src/lib.rs b/compiler/rustc_span/src/lib.rs index 26b4ebeab1b..ada3bae6150 100644 --- a/compiler/rustc_span/src/lib.rs +++ b/compiler/rustc_span/src/lib.rs @@ -15,7 +15,7 @@ #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")] #![feature(array_windows)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(if_let_guard)] #![feature(negative_impls)] #![feature(min_specialization)] diff --git a/compiler/rustc_target/src/lib.rs b/compiler/rustc_target/src/lib.rs index 9c9e297849e..a7deab9d2ef 100644 --- a/compiler/rustc_target/src/lib.rs +++ b/compiler/rustc_target/src/lib.rs @@ -11,7 +11,7 @@ #![feature(assert_matches)] #![feature(associated_type_bounds)] #![feature(exhaustive_patterns)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(never_type)] #![feature(rustc_attrs)] diff --git a/compiler/rustc_trait_selection/src/lib.rs b/compiler/rustc_trait_selection/src/lib.rs index f039b1fca18..d35f74974fd 100644 --- a/compiler/rustc_trait_selection/src/lib.rs +++ b/compiler/rustc_trait_selection/src/lib.rs @@ -18,7 +18,7 @@ #![feature(hash_drain_filter)] #![cfg_attr(bootstrap, feature(label_break_value))] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(if_let_guard)] #![feature(never_type)] #![feature(type_alias_impl_trait)] diff --git a/compiler/rustc_traits/src/lib.rs b/compiler/rustc_traits/src/lib.rs index 318e76c79f1..2d39e973ed9 100644 --- a/compiler/rustc_traits/src/lib.rs +++ b/compiler/rustc_traits/src/lib.rs @@ -3,7 +3,7 @@ #![deny(rustc::untranslatable_diagnostic)] #![deny(rustc::diagnostic_outside_of_impl)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![recursion_limit = "256"] #[macro_use] diff --git a/compiler/rustc_ty_utils/src/lib.rs b/compiler/rustc_ty_utils/src/lib.rs index 6931b15b1ba..8524e57cb58 100644 --- a/compiler/rustc_ty_utils/src/lib.rs +++ b/compiler/rustc_ty_utils/src/lib.rs @@ -6,7 +6,7 @@ #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")] #![feature(control_flow_enum)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(never_type)] #![feature(box_patterns)] #![recursion_limit = "256"] diff --git a/compiler/rustc_typeck/src/lib.rs b/compiler/rustc_typeck/src/lib.rs index ac66819d283..b1ce972e1d6 100644 --- a/compiler/rustc_typeck/src/lib.rs +++ b/compiler/rustc_typeck/src/lib.rs @@ -66,7 +66,7 @@ This API is completely unstable and subject to change. #![feature(iter_intersperse)] #![cfg_attr(bootstrap, feature(label_break_value))] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(never_type)] #![feature(once_cell)] diff --git a/library/alloc/src/lib.rs b/library/alloc/src/lib.rs index e5cf9033c86..8619467c2d9 100644 --- a/library/alloc/src/lib.rs +++ b/library/alloc/src/lib.rs @@ -169,7 +169,7 @@ #![cfg_attr(not(test), feature(generator_trait))] #![feature(hashmap_internals)] #![feature(lang_items)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(min_specialization)] #![feature(negative_impls)] #![feature(never_type)] diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs index f13500de014..bc4f1b27c2a 100644 --- a/library/std/src/lib.rs +++ b/library/std/src/lib.rs @@ -255,7 +255,7 @@ #![cfg_attr(bootstrap, feature(label_break_value))] #![feature(lang_items)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(linkage)] #![feature(link_cfg)] #![feature(min_specialization)] diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs index f6c648140b8..14d695582b0 100644 --- a/src/librustdoc/lib.rs +++ b/src/librustdoc/lib.rs @@ -9,7 +9,7 @@ #![feature(control_flow_enum)] #![feature(drain_filter)] #![feature(let_chains)] -#![feature(let_else)] +#![cfg_attr(bootstrap, feature(let_else))] #![feature(test)] #![feature(never_type)] #![feature(once_cell)]