| error[E0658]: `cfg(fmt_debug)` is experimental and subject to change |
| --> $DIR/feature-gate-fmt-debug.rs:1:7 |
| | |
| LL | #[cfg(fmt_debug = "full")] |
| | ^^^^^^^^^^^^^^^^^^ |
| | |
| = note: see issue #129709 <https://github.com/rust-lang/rust/issues/129709> for more information |
| = help: add `#![feature(fmt_debug)]` 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| = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |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`. |
