inline format!() args up to and including rustc_middle

compiler/rustc_parse/src/parser/expr.rs

@@ -1052,7 +1052,7 @@ impl<'a> Parser<'a> {
                 }
                 components.push(Punct(c));
             } else {
-                panic!("unexpected character in a float token: {:?}", c)
+                panic!("unexpected character in a float token: {c:?}")
             }
         }
         if !ident_like.is_empty() {
@@ -1113,7 +1113,7 @@ impl<'a> Parser<'a> {
                 self.error_unexpected_after_dot();
                 DestructuredFloat::Error
             }
-            _ => panic!("unexpected components in a float token: {:?}", components),
+            _ => panic!("unexpected components in a float token: {components:?}"),
         }
     }