src/test/ui/suggestions/format-borrow.rs

   1 fn main() {
   2     let a: String = &String::from("a");
   3     //~^ ERROR mismatched types
   4     let b: String = &format!("b");
   5     //~^ ERROR mismatched types
   6     let c: String = &mut format!("c");
   7     //~^ ERROR mismatched types
   8     let d: String = &mut (format!("d"));
   9     //~^ ERROR mismatched types
  10 }