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### What it does
Detects `format!` within the arguments of another macro that does
formatting such as `format!` itself, `write!` or `println!`. Suggests
inlining the `format!` call.
### Why is this bad?
The recommended code is both shorter and avoids a temporary allocation.
### Example
```
println!("error: {}", format!("something failed at {}", Location::caller()));
```
Use instead:
```
println!("error: something failed at {}", Location::caller());
```
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