Auto merge of #94105 - 5225225:destabilise-entry-insert, r=Mark-Simulacrum

[rust.git] / compiler / rustc_typeck / src / check / demand.rs

diff --git a/compiler/rustc_typeck/src/check/demand.rs b/compiler/rustc_typeck/src/check/demand.rs
index 2409346298da98c4c0c85dfe15c138cb27ea2bfc..e7eadb760c7c04ec692230d2993aa8005145cf77 100644 (file)
--- a/compiler/rustc_typeck/src/check/demand.rs
+++ b/compiler/rustc_typeck/src/check/demand.rs
@@ -340,7 +340,7 @@ fn suggest_compatible_variants(
 
             let prefix = match self.maybe_get_struct_pattern_shorthand_field(expr) {
                 Some(ident) => format!("{}: ", ident),
-                None => format!(""),
+                None => String::new(),
             };
 
             match &compatible_variants[..] {
@@ -683,7 +683,7 @@ pub fn check_ref(
 
                         let prefix = match self.maybe_get_struct_pattern_shorthand_field(expr) {
                             Some(ident) => format!("{}: ", ident),
-                            None => format!(""),
+                            None => String::new(),
                         };
 
                         if let Some(hir::Node::Expr(hir::Expr {
@@ -734,7 +734,7 @@ pub fn check_ref(
                 hir::ExprKind::AddrOf(hir::BorrowKind::Ref, _, ref expr),
                 _,
                 &ty::Ref(_, checked, _),
-            ) if self.infcx.can_sub(self.param_env, checked, &expected).is_ok() => {
+            ) if self.infcx.can_sub(self.param_env, checked, expected).is_ok() => {
                 // We have `&T`, check if what was expected was `T`. If so,
                 // we may want to suggest removing a `&`.
                 if sm.is_imported(expr.span) {
@@ -875,7 +875,7 @@ pub fn check_ref(
                             };
                             let prefix = match self.maybe_get_struct_pattern_shorthand_field(expr) {
                                 Some(ident) => format!("{}: ", ident),
-                                None => format!(""),
+                                None => String::new(),
                             };
                             let (span, suggestion) = if self.is_else_if_block(expr) {
                                 // Don't suggest nonsense like `else *if`