rust-clippy/tests/ui/format.stderr

error: useless use of `format!`
  --> $DIR/format.rs:13:5
   |
LL |     format!("foo");
   |     ^^^^^^^^^^^^^^^ help: consider using .to_string(): `"foo".to_string();`
   |
   = note: `-D clippy::useless-format` implied by `-D warnings`

error: useless use of `format!`
  --> $DIR/format.rs:14:5
   |
LL |     format!("{{}}");
   |     ^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"{}".to_string();`

error: useless use of `format!`
  --> $DIR/format.rs:15:5
   |
LL |     format!("{{}} abc {{}}");
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"{} abc {}".to_string();`

error: useless use of `format!`
  --> $DIR/format.rs:17:5
   |
LL |     format!("{}", "foo");
   |     ^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"foo".to_string();`

error: useless use of `format!`
  --> $DIR/format.rs:21:5
   |
LL |     format!("{:+}", "foo"); // Warn when the format makes no difference.
   |     ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"foo".to_string();`

error: useless use of `format!`
  --> $DIR/format.rs:22:5
   |
LL |     format!("{:<}", "foo"); // Warn when the format makes no difference.
   |     ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"foo".to_string();`

error: useless use of `format!`
  --> $DIR/format.rs:27:5
   |
LL |     format!("{}", arg);
   |     ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `arg.to_string();`

error: useless use of `format!`
  --> $DIR/format.rs:31:5
   |
LL |     format!("{:+}", arg); // Warn when the format makes no difference.
   |     ^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `arg.to_string();`

error: useless use of `format!`
  --> $DIR/format.rs:32:5
   |
LL |     format!("{:<}", arg); // Warn when the format makes no difference.
   |     ^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `arg.to_string();`

error: useless use of `format!`
  --> $DIR/format.rs:59:5
   |
LL |     format!("{}", 42.to_string());
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `to_string()` is enough: `42.to_string();`

error: useless use of `format!`
  --> $DIR/format.rs:61:5
   |
LL |     format!("{}", x.display().to_string());
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `to_string()` is enough: `x.display().to_string();`

error: aborting due to 11 previous errors