error[E0658]: box pattern syntax is experimental (see issue #29641) | |
--> $DIR/feature-gate-box_patterns.rs:12:9 | |
| | |
LL | let box x = Box::new('c'); //~ ERROR box pattern syntax is experimental | |
| ^^^^^ | |
| | |
= help: add #![feature(box_patterns)] to the crate attributes to enable | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0658`. |