src/tools/clippy/src/docs/format_in_format_args.txt

   1 ### What it does
   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.
   5
   6 ### Why is this bad?
   7 The recommended code is both shorter and avoids a temporary allocation.
   8
   9 ### Example
  10 ```
  11 println!("error: {}", format!("something failed at {}", Location::caller()));
  12 ```
  13 Use instead:
  14 ```
  15 println!("error: something failed at {}", Location::caller());
  16 ```