| error[E0658]: use of unstable library feature 'format_args_nl': `format_args_nl` is only for internal language use and is subject to change |
| --> $DIR/feature-gate-format_args_nl.rs:2:5 |
| | |
| LL | format_args_nl!(""); |
| | ^^^^^^^^^^^^^^ |
| | |
| = help: add `#![feature(format_args_nl)]` to the crate attributes to enable |
| = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0658`. |