| error[E0658]: box pattern syntax is experimental | |
| --> $DIR/feature-gate-deref_patterns.rs:3:9 | |
| | | |
| LL | let box x = Box::new('c'); | |
| | ^^^^^ | |
| | | |
| = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information | |
| = help: add `#![feature(box_patterns)]` 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| = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date | |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`. |