error[E0658]: `try` expression is experimental --> $DIR/feature-gate-try_blocks.rs:4:33 | LL | let try_result: Option<_> = try { | _________________________________^ LL | | let x = 5; LL | | x LL | | }; | |_____^ | = note: see issue #31436 for more information = help: add `#![feature(try_blocks)]` to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0658`.