Auto merge of #7418 - flip1995:rustup, r=flip1995

Rustup

r? `@ghost`

changelog: none

Author: bors

CONTRIBUTING.md

@@ -342,7 +342,7 @@ We have prioritization labels and a sync-blocker label, which are described belo
 - [P-low][p-low]: Requires attention (fix/response/evaluation) by a team member but isn't urgent.
 - [P-medium][p-medium]: Should be addressed by a team member until the next sync.
 - [P-high][p-high]: Should be immediately addressed and will require an out-of-cycle sync or a backport.
-- [L-sync-blocker][l-sync-blocker]: An issue that "blocks" a sync. 
+- [L-sync-blocker][l-sync-blocker]: An issue that "blocks" a sync.
 Or rather: before the sync this should be addressed,
 e.g. by removing a lint again, so it doesn't hit beta/stable.
 

README.md

@@ -95,7 +95,7 @@ As with `cargo check`, this includes dependencies that are members of the worksp
 If you want to run Clippy **only** on the given crate, use the `--no-deps` option like this:
 
 ```terminal
-cargo clippy -p example -- --no-deps 
+cargo clippy -p example -- --no-deps
 ```
 
 ### As a rustc replacement (`clippy-driver`)

clippy_lints/src/derive.rs

@@ -410,13 +410,8 @@ impl<'tcx> Visitor<'tcx> for UnsafeVisitor<'_, 'tcx> {
         }
 
         if let ExprKind::Block(block, _) = expr.kind {
-            match block.rules {
-                BlockCheckMode::UnsafeBlock(UnsafeSource::UserProvided)
-                | BlockCheckMode::PushUnsafeBlock(UnsafeSource::UserProvided)
-                | BlockCheckMode::PopUnsafeBlock(UnsafeSource::UserProvided) => {
-                    self.has_unsafe = true;
-                },
-                _ => {},
+            if let BlockCheckMode::UnsafeBlock(UnsafeSource::UserProvided) = block.rules {
+                self.has_unsafe = true;
             }
         }
 

clippy_lints/src/get_last_with_len.rs

@@ -74,7 +74,7 @@ impl<'tcx> LateLintPass<'tcx> for GetLastWithLen {
 
             // LHS of subtraction is "x.len()"
             if let ExprKind::MethodCall(arg_lhs_path, _, lhs_args, _) = &lhs.kind;
-            if arg_lhs_path.ident.name == sym!(len);
+            if arg_lhs_path.ident.name == sym::len;
             if let Some(arg_lhs_struct) = lhs_args.get(0);
 
             // The two vectors referenced (x in x.get(...) and in x.len())

clippy_lints/src/len_zero.rs

@@ -128,7 +128,7 @@ impl<'tcx> LateLintPass<'tcx> for LenZero {
 
     fn check_impl_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx ImplItem<'_>) {
         if_chain! {
-            if item.ident.as_str() == "len";
+            if item.ident.name == sym::len;
             if let ImplItemKind::Fn(sig, _) = &item.kind;
             if sig.decl.implicit_self.has_implicit_self();
             if cx.access_levels.is_exported(item.hir_id());
@@ -189,8 +189,8 @@ impl<'tcx> LateLintPass<'tcx> for LenZero {
 }
 
 fn check_trait_items(cx: &LateContext<'_>, visited_trait: &Item<'_>, trait_items: &[TraitItemRef]) {
-    fn is_named_self(cx: &LateContext<'_>, item: &TraitItemRef, name: &str) -> bool {
-        item.ident.name.as_str() == name
+    fn is_named_self(cx: &LateContext<'_>, item: &TraitItemRef, name: Symbol) -> bool {
+        item.ident.name == name
             && if let AssocItemKind::Fn { has_self } = item.kind {
                 has_self && { cx.tcx.fn_sig(item.id.def_id).inputs().skip_binder().len() == 1 }
             } else {
@@ -207,7 +207,9 @@ fn check_trait_items(cx: &LateContext<'_>, visited_trait: &Item<'_>, trait_items
         }
     }
 
-    if cx.access_levels.is_exported(visited_trait.hir_id()) && trait_items.iter().any(|i| is_named_self(cx, i, "len")) {
+    if cx.access_levels.is_exported(visited_trait.hir_id())
+        && trait_items.iter().any(|i| is_named_self(cx, i, sym::len))
+    {
         let mut current_and_super_traits = DefIdSet::default();
         fill_trait_set(visited_trait.def_id.to_def_id(), &mut current_and_super_traits, cx);
 
@@ -401,7 +403,7 @@ fn check_len(
             return;
         }
 
-        if method_name.as_str() == "len" && args.len() == 1 && has_is_empty(cx, &args[0]) {
+        if method_name == sym::len && args.len() == 1 && has_is_empty(cx, &args[0]) {
             let mut applicability = Applicability::MachineApplicable;
             span_lint_and_sugg(
                 cx,

clippy_lints/src/loops/manual_memcpy.rs

@@ -118,7 +118,7 @@ fn build_manual_memcpy_suggestion<'tcx>(
     let print_limit = |end: &Expr<'_>, end_str: &str, base: &Expr<'_>, sugg: MinifyingSugg<'static>| {
         if_chain! {
             if let ExprKind::MethodCall(method, _, len_args, _) = end.kind;
-            if method.ident.name == sym!(len);
+            if method.ident.name == sym::len;
             if len_args.len() == 1;
             if let Some(arg) = len_args.get(0);
             if path_to_local(arg) == path_to_local(base);

clippy_lints/src/loops/needless_range_loop.rs

@@ -192,7 +192,7 @@ fn is_len_call(expr: &Expr<'_>, var: Symbol) -> bool {
     if_chain! {
         if let ExprKind::MethodCall(method, _, len_args, _) = expr.kind;
         if len_args.len() == 1;
-        if method.ident.name == sym!(len);
+        if method.ident.name == sym::len;
         if let ExprKind::Path(QPath::Resolved(_, path)) = len_args[0].kind;
         if path.segments.len() == 1;
         if path.segments[0].ident.name == var;

clippy_lints/src/methods/or_fun_call.rs

@@ -87,7 +87,7 @@ pub(super) fn check<'tcx>(
         ];
 
         if let hir::ExprKind::MethodCall(path, _, args, _) = &arg.kind {
-            if path.ident.as_str() == "len" {
+            if path.ident.name == sym::len {
                 let ty = cx.typeck_results().expr_ty(&args[0]).peel_refs();
 
                 match ty.kind() {

clippy_lints/src/no_effect.rs

@@ -167,7 +167,7 @@ fn reduce_expression<'a>(cx: &LateContext<'_>, expr: &'a Expr<'a>) -> Option<Vec
                         BlockCheckMode::UnsafeBlock(UnsafeSource::UserProvided) => None,
                         BlockCheckMode::DefaultBlock => Some(vec![&**e]),
                         // in case of compiler-inserted signaling blocks
-                        _ => reduce_expression(cx, e),
+                        BlockCheckMode::UnsafeBlock(_) => reduce_expression(cx, e),
                     }
                 })
             } else {

clippy_lints/src/ranges.rs

@@ -329,7 +329,7 @@ fn check_range_zip_with_len(cx: &LateContext<'_>, path: &PathSegment<'_>, args:
         if is_integer_const(cx, start, 0);
         // `.len()` call
         if let ExprKind::MethodCall(len_path, _, len_args, _) = end.kind;
-        if len_path.ident.name == sym!(len) && len_args.len() == 1;
+        if len_path.ident.name == sym::len && len_args.len() == 1;
         // `.iter()` and `.len()` called on same `Path`
         if let ExprKind::Path(QPath::Resolved(_, iter_path)) = iter_args[0].kind;
         if let ExprKind::Path(QPath::Resolved(_, len_path)) = len_args[0].kind;