| error[E0658]: the semantics of constant patterns is not yet settled | |
| --> $DIR/feature-gate.rs:13:1 | |
| | | |
| LL | #[structural_match] | |
| | ^^^^^^^^^^^^^^^^^^^ | |
| | | |
| = note: for more information, see https://github.com/rust-lang/rust/issues/31434 | |
| = help: add `#![feature(structural_match)]` to the crate attributes to enable | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0658`. |