Remove unused features in compiler

compiler/rustc_abi/src/lib.rs

@@ -1,5 +1,5 @@
 // tidy-alphabetical-start
-#![cfg_attr(all(feature = "nightly", bootstrap), feature(assert_matches))]
+#![cfg_attr(all(feature = "nightly", bootstrap, test), feature(assert_matches))]
 #![cfg_attr(feature = "nightly", allow(internal_features))]
 #![cfg_attr(feature = "nightly", feature(rustc_attrs))]
 #![cfg_attr(feature = "nightly", feature(step_trait))]

compiler/rustc_codegen_cranelift/src/lib.rs

@@ -2,8 +2,8 @@
 // Note: please avoid adding other feature gates where possible
 #![feature(rustc_private)]
 // Only used to define intrinsics in `compiler_builtins.rs`.
-#![feature(f16)]
-#![feature(f128)]
+#![cfg_attr(feature = "jit", feature(f16))]
+#![cfg_attr(feature = "jit", feature(f128))]
 // Note: please avoid adding other feature gates where possible
 #![warn(rust_2018_idioms)]
 #![warn(unreachable_pub)]

compiler/rustc_data_structures/src/lib.rs

@@ -12,6 +12,7 @@
 #![allow(rustc::potential_query_instability)]
 #![cfg_attr(bootstrap, feature(assert_matches))]
 #![cfg_attr(bootstrap, feature(cold_path))]
+#![cfg_attr(test, feature(test))]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![feature(allocator_api)]
 #![feature(ascii_char)]
@@ -30,7 +31,6 @@
 #![feature(ptr_alignment_type)]
 #![feature(rustc_attrs)]
 #![feature(sized_hierarchy)]
-#![feature(test)]
 #![feature(thread_id_value)]
 #![feature(trusted_len)]
 #![feature(type_alias_impl_trait)]

compiler/rustc_errors/src/lib.rs

@@ -14,8 +14,6 @@
 #![feature(negative_impls)]
 #![feature(never_type)]
 #![feature(rustc_attrs)]
-#![feature(try_blocks)]
-#![feature(yeet_expr)]
 // tidy-alphabetical-end
 
 extern crate self as rustc_errors;

compiler/rustc_index/src/lib.rs

@@ -1,6 +1,7 @@
 // tidy-alphabetical-start
 #![cfg_attr(all(feature = "nightly", test), feature(stmt_expr_attributes))]
-#![cfg_attr(feature = "nightly", feature(extend_one, step_trait, test))]
+#![cfg_attr(all(feature = "nightly", test), feature(test))]
+#![cfg_attr(feature = "nightly", feature(extend_one, step_trait))]
 #![cfg_attr(feature = "nightly", feature(new_range_api))]
 // tidy-alphabetical-end
 

compiler/rustc_macros/src/lib.rs

@@ -1,6 +1,5 @@
 // tidy-alphabetical-start
 #![allow(rustc::default_hash_types)]
-#![feature(if_let_guard)]
 #![feature(never_type)]
 #![feature(proc_macro_diagnostic)]
 #![feature(proc_macro_tracked_env)]

compiler/rustc_metadata/src/lib.rs

@@ -1,6 +1,5 @@
 // tidy-alphabetical-start
 #![allow(internal_features)]
-#![feature(decl_macro)]
 #![feature(error_iter)]
 #![feature(file_buffered)]
 #![feature(gen_blocks)]

compiler/rustc_middle/src/lib.rs

@@ -28,6 +28,7 @@
 #![allow(internal_features)]
 #![allow(rustc::direct_use_of_rustc_type_ir)]
 #![cfg_attr(bootstrap, feature(assert_matches))]
+#![cfg_attr(doc, feature(intra_doc_pointers))]
 #![feature(allocator_api)]
 #![feature(associated_type_defaults)]
 #![feature(box_as_ptr)]
@@ -43,7 +44,6 @@
 #![feature(file_buffered)]
 #![feature(gen_blocks)]
 #![feature(if_let_guard)]
-#![feature(intra_doc_pointers)]
 #![feature(min_specialization)]
 #![feature(negative_impls)]
 #![feature(never_type)]
@@ -56,7 +56,6 @@
 #![feature(try_trait_v2_residual)]
 #![feature(try_trait_v2_yeet)]
 #![feature(type_alias_impl_trait)]
-#![feature(unwrap_infallible)]
 #![feature(yeet_expr)]
 #![recursion_limit = "256"]
 // tidy-alphabetical-end

compiler/rustc_parse/src/lib.rs

@@ -2,12 +2,12 @@
 
 // tidy-alphabetical-start
 #![cfg_attr(bootstrap, feature(assert_matches))]
+#![cfg_attr(test, feature(iter_order_by))]
 #![feature(box_patterns)]
 #![feature(debug_closure_helpers)]
 #![feature(default_field_values)]
 #![feature(if_let_guard)]
 #![feature(iter_intersperse)]
-#![feature(iter_order_by)]
 #![recursion_limit = "256"]
 // tidy-alphabetical-end
 

compiler/rustc_passes/src/lib.rs

@@ -4,11 +4,6 @@
 //!
 //! This API is completely unstable and subject to change.
 
-// tidy-alphabetical-start
-#![feature(if_let_guard)]
-#![feature(map_try_insert)]
-// tidy-alphabetical-end
-
 use rustc_middle::query::Providers;
 
 pub mod abi_test;

compiler/rustc_pattern_analysis/src/lib.rs

@@ -4,7 +4,6 @@
 
 // tidy-alphabetical-start
 #![allow(unused_crate_dependencies)]
-#![cfg_attr(feature = "rustc", feature(if_let_guard))]
 // tidy-alphabetical-end
 
 pub(crate) mod checks;

compiler/rustc_public_bridge/src/lib.rs

@@ -14,7 +14,6 @@
 // tidy-alphabetical-start
 #![allow(rustc::usage_of_ty_tykind)]
 #![doc(test(attr(allow(unused_variables), deny(warnings), allow(internal_features))))]
-#![feature(sized_hierarchy)]
 #![feature(trait_alias)]
 // tidy-alphabetical-end
 

compiler/rustc_resolve/src/lib.rs

@@ -15,7 +15,6 @@
 #![feature(const_default)]
 #![feature(const_trait_impl)]
 #![feature(control_flow_into_value)]
-#![feature(decl_macro)]
 #![feature(default_field_values)]
 #![feature(if_let_guard)]
 #![feature(iter_intersperse)]

compiler/rustc_serialize/src/lib.rs

@@ -3,7 +3,6 @@
 // tidy-alphabetical-start
 #![allow(internal_features)]
 #![allow(rustc::internal)]
-#![cfg_attr(test, feature(test))]
 #![doc(test(attr(allow(unused_variables), deny(warnings), allow(internal_features))))]
 #![feature(core_intrinsics)]
 #![feature(min_specialization)]

compiler/rustc_type_ir/src/lib.rs

@@ -5,10 +5,7 @@
 #![allow(rustc::usage_of_type_ir_inherent)]
 #![allow(rustc::usage_of_type_ir_traits)]
 #![cfg_attr(feature = "nightly", allow(internal_features))]
-#![cfg_attr(
-    feature = "nightly",
-    feature(associated_type_defaults, never_type, rustc_attrs, negative_impls)
-)]
+#![cfg_attr(feature = "nightly", feature(associated_type_defaults, rustc_attrs, negative_impls))]
 // tidy-alphabetical-end
 
 extern crate self as rustc_type_ir;