error[E0658]: coroutine syntax is experimental --> $DIR/static-closures.rs:2:5 | LL | static || {}; | ^^^^^^ | = note: see issue #43122 for more information = help: add `#![feature(coroutines)]` to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date error[E0697]: closures cannot be static --> $DIR/static-closures.rs:2:5 | LL | static || {}; | ^^^^^^^^^ error: aborting due to 2 previous errors Some errors have detailed explanations: E0658, E0697. For more information about an error, try `rustc --explain E0658`.