Auto merge of #87963 - GuillaumeGomez:rollup-e54sbez, r=GuillaumeGomez

Rollup of 4 pull requests

Successful merges:

 - #87819 (Use a more accurate span on assoc types WF checks)
 - #87863 (Fix Windows Command::env("PATH"))
 - #87885 (Link to edition guide instead of issues for 2021 lints.)
 - #87941 (Fix/improve rustdoc-js tool)

Failed merges:

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

compiler/rustc_lint/src/array_into_iter.rs

@@ -32,7 +32,7 @@ declare_lint! {
     Warn,
     "detects calling `into_iter` on arrays in Rust 2015 and 2018",
     @future_incompatible = FutureIncompatibleInfo {
-        reference: "issue #66145 <https://github.com/rust-lang/rust/issues/66145>",
+        reference: "<https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>",
         reason: FutureIncompatibilityReason::EditionSemanticsChange(Edition::Edition2021),
     };
 }

compiler/rustc_lint/src/builtin.rs

@@ -1680,7 +1680,7 @@ declare_lint! {
     Warn,
     "`...` range patterns are deprecated",
     @future_incompatible = FutureIncompatibleInfo {
-        reference: "issue #80165 <https://github.com/rust-lang/rust/issues/80165>",
+        reference: "<https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>",
         reason: FutureIncompatibilityReason::EditionError(Edition::Edition2021),
     };
 }

compiler/rustc_lint_defs/src/builtin.rs

@@ -1605,7 +1605,7 @@ declare_lint! {
     Warn,
     "suggest using `dyn Trait` for trait objects",
     @future_incompatible = FutureIncompatibleInfo {
-        reference: "issue #80165 <https://github.com/rust-lang/rust/issues/80165>",
+        reference: "<https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>",
         reason: FutureIncompatibilityReason::EditionError(Edition::Edition2021),
     };
 }
@@ -3247,7 +3247,7 @@ declare_lint! {
     Allow,
     "detects usage of old versions of or-patterns",
     @future_incompatible = FutureIncompatibleInfo {
-        reference: "issue #84869 <https://github.com/rust-lang/rust/issues/84869>",
+        reference: "<https://doc.rust-lang.org/nightly/edition-guide/rust-2021/or-patterns-macro-rules.html>",
         reason: FutureIncompatibilityReason::EditionError(Edition::Edition2021),
     };
 }
@@ -3296,7 +3296,7 @@ declare_lint! {
     "detects the usage of trait methods which are ambiguous with traits added to the \
         prelude in future editions",
     @future_incompatible = FutureIncompatibleInfo {
-        reference: "issue #85684 <https://github.com/rust-lang/rust/issues/85684>",
+        reference: "<https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>",
         reason: FutureIncompatibilityReason::EditionError(Edition::Edition2021),
     };
 }
@@ -3331,7 +3331,7 @@ declare_lint! {
     Allow,
     "identifiers that will be parsed as a prefix in Rust 2021",
     @future_incompatible = FutureIncompatibleInfo {
-        reference: "issue #84978 <https://github.com/rust-lang/rust/issues/84978>",
+        reference: "<https://doc.rust-lang.org/nightly/edition-guide/rust-2021/reserving-syntax.html>",
         reason: FutureIncompatibilityReason::EditionError(Edition::Edition2021),
     };
     crate_level_only

compiler/rustc_typeck/src/check/wfcheck.rs

@@ -194,12 +194,13 @@ pub fn check_trait_item(tcx: TyCtxt<'_>, def_id: LocalDefId) {
     let hir_id = tcx.hir().local_def_id_to_hir_id(def_id);
     let trait_item = tcx.hir().expect_trait_item(hir_id);
 
-    let method_sig = match trait_item.kind {
-        hir::TraitItemKind::Fn(ref sig, _) => Some(sig),
-        _ => None,
+    let (method_sig, span) = match trait_item.kind {
+        hir::TraitItemKind::Fn(ref sig, _) => (Some(sig), trait_item.span),
+        hir::TraitItemKind::Type(_bounds, Some(ty)) => (None, ty.span),
+        _ => (None, trait_item.span),
     };
     check_object_unsafe_self_trait_by_name(tcx, &trait_item);
-    check_associated_item(tcx, trait_item.hir_id(), trait_item.span, method_sig);
+    check_associated_item(tcx, trait_item.hir_id(), span, method_sig);
 }
 
 fn could_be_self(trait_def_id: LocalDefId, ty: &hir::Ty<'_>) -> bool {
@@ -268,12 +269,13 @@ pub fn check_impl_item(tcx: TyCtxt<'_>, def_id: LocalDefId) {
     let hir_id = tcx.hir().local_def_id_to_hir_id(def_id);
     let impl_item = tcx.hir().expect_impl_item(hir_id);
 
-    let method_sig = match impl_item.kind {
-        hir::ImplItemKind::Fn(ref sig, _) => Some(sig),
-        _ => None,
+    let (method_sig, span) = match impl_item.kind {
+        hir::ImplItemKind::Fn(ref sig, _) => (Some(sig), impl_item.span),
+        hir::ImplItemKind::TyAlias(ty) => (None, ty.span),
+        _ => (None, impl_item.span),
     };
 
-    check_associated_item(tcx, impl_item.hir_id(), impl_item.span, method_sig);
+    check_associated_item(tcx, impl_item.hir_id(), span, method_sig);
 }
 
 fn check_param_wf(tcx: TyCtxt<'_>, param: &hir::GenericParam<'_>) {