Auto merge of #13130 - nyurik:ref-lints, r=Centri3

Avoid ref when using format!

Clean up a few minor refs in `format!` macro, as it has a performance cost. Apparently the compiler is unable to inline `format!("{}", &variable)`, and does a run-time double-reference instead (format macro already does one level referencing).

Inlining format args prevents accidental `&` misuse.

See also https://github.com/rust-lang/rust/issues/112156

changelog: none

clippy_lints/src/methods/open_options.rs

@@ -151,7 +151,7 @@ fn check_open_options(cx: &LateContext<'_>, settings: &[(OpenOption, Argument, S
                 cx,
                 NONSENSICAL_OPEN_OPTIONS,
                 prev_span,
-                format!("the method `{}` is called more than once", &option),
+                format!("the method `{option}` is called more than once"),
             );
         }
     }

clippy_lints/src/methods/wrong_self_convention.rs

@@ -127,7 +127,7 @@ pub(super) fn check<'tcx>(
                         .collect::<Vec<_>>()
                         .join(" and ");
 
-                    format!("methods with the following characteristics: ({})", &s)
+                    format!("methods with the following characteristics: ({s})")
                 } else {
                     format!("methods called {}", &conventions[0])
                 }