error: useless use of `format!` --> $DIR/format.rs:22:5 | 22 | 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:24:5 | 24 | format!("{}", "foo"); | ^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"foo".to_string()` | = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) error: useless use of `format!` --> $DIR/format.rs:28:5 | 28 | format!("{:+}", "foo"); // warn when the format makes no difference | ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"foo".to_string()` | = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) error: useless use of `format!` --> $DIR/format.rs:29:5 | 29 | format!("{:<}", "foo"); // warn when the format makes no difference | ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"foo".to_string()` | = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) error: useless use of `format!` --> $DIR/format.rs:34:5 | 34 | format!("{}", arg); | ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `arg.to_string()` | = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) error: useless use of `format!` --> $DIR/format.rs:38:5 | 38 | format!("{:+}", arg); // warn when the format makes no difference | ^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `arg.to_string()` | = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) error: useless use of `format!` --> $DIR/format.rs:39:5 | 39 | format!("{:<}", arg); // warn when the format makes no difference | ^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `arg.to_string()` | = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) error: useless use of `format!` --> $DIR/format.rs:66:5 | 66 | format!("{}", 42.to_string()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `to_string()` is enough: `42.to_string()` | = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) error: useless use of `format!` --> $DIR/format.rs:68:5 | 68 | format!("{}", x.display().to_string()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `to_string()` is enough: `x.display().to_string()` | = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) error: aborting due to 9 previous errors