2 Detects `format!` within the arguments of another macro that does
3 formatting such as `format!` itself, `write!` or `println!`. Suggests
4 inlining the `format!` call.
7 The recommended code is both shorter and avoids a temporary allocation.
11 println!("error: {}", format!("something failed at {}", Location::caller()));
15 println!("error: something failed at {}", Location::caller());