1 error[E0658]: box pattern syntax is experimental
2 --> $DIR/feature-gate-box_patterns.rs:2:9
4 LL | let box x = Box::new('c');
7 = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information
8 = help: add `#![feature(box_patterns)]` to the crate attributes to enable
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0658`.