Auto merge of rust-lang#91959 - matthiaskrgr:rollup-rhajuvw, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - rust-lang#90521 (Stabilize `destructuring_assignment`)
 - rust-lang#91479 (Add `[T]::as_simd(_mut)`)
 - rust-lang#91584 (Improve code for rustdoc-gui tester)
 - rust-lang#91886 (core: minor `Option` doc correction)
 - rust-lang#91888 (Handle unordered const/ty generics for object lifetime defaults)
 - rust-lang#91905 (Fix source code page sidebar on mobile)
 - rust-lang#91906 (Removed `in_band_lifetimes` from `library\proc_macro`)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

compiler/rustc_ast_lowering/src/expr.rs

@@ -9,7 +9,6 @@ use rustc_errors::struct_span_err;
 use rustc_hir as hir;
 use rustc_hir::def::Res;
 use rustc_hir::definitions::DefPathData;
-use rustc_session::parse::feature_err;
 use rustc_span::hygiene::ExpnId;
 use rustc_span::source_map::{respan, DesugaringKind, Span, Spanned};
 use rustc_span::symbol::{sym, Ident, Symbol};
@@ -962,24 +961,6 @@ impl<'hir> LoweringContext<'_, 'hir> {
                 self.lower_span(eq_sign_span),
             );
         }
-        if !self.sess.features_untracked().destructuring_assignment {
-            let mut err = feature_err(
-                &self.sess.parse_sess,
-                sym::destructuring_assignment,
-                eq_sign_span,
-                "destructuring assignments are unstable",
-            );
-            err.span_label(lhs.span, "cannot assign to this expression");
-            if self.is_in_loop_condition {
-                err.span_suggestion_verbose(
-                    lhs.span.shrink_to_lo(),
-                    "you might have meant to use pattern destructuring",
-                    "let ".to_string(),
-                    rustc_errors::Applicability::MachineApplicable,
-                );
-            }
-            err.emit();
-        }
 
         let mut assignments = vec![];
 

compiler/rustc_ast_lowering/src/lib.rs

@@ -52,7 +52,7 @@ use rustc_hir::def::{DefKind, Namespace, PartialRes, PerNS, Res};
 use rustc_hir::def_id::{DefId, DefPathHash, LocalDefId, CRATE_DEF_ID};
 use rustc_hir::definitions::{DefKey, DefPathData, Definitions};
 use rustc_hir::intravisit;
-use rustc_hir::{ConstArg, GenericArg, InferKind, ParamName};
+use rustc_hir::{ConstArg, GenericArg, ParamName};
 use rustc_index::vec::{Idx, IndexVec};
 use rustc_query_system::ich::StableHashingContext;
 use rustc_session::lint::builtin::BARE_TRAIT_OBJECTS;
@@ -1113,7 +1113,6 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                         return GenericArg::Infer(hir::InferArg {
                             hir_id: self.lower_node_id(ty.id),
                             span: self.lower_span(ty.span),
-                            kind: InferKind::Type,
                         });
                     }
                     // We parse const arguments as path types as we cannot distinguish them during