} else if let Some(panic_str) = maybe_panic_str {
TestResult::TrFailedMsg(format!(
r#"panic did not contain expected string
- panic message: `{:?}`,
- expected substring: `{:?}`"#,
- panic_str, msg
+ panic message: `{panic_str:?}`,
+ expected substring: `{msg:?}`"#
))
} else {
TestResult::TrFailedMsg(format!(