error[E0658]: yield syntax is experimental --> $DIR/feature-gate-coroutines.rs:5:5 | LL | yield true; | ^^^^^^^^^^ | = 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to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date error[E0658]: yield syntax is experimental --> $DIR/feature-gate-coroutines.rs:10:16 | LL | let _ = || yield true; | ^^^^^^^^^^ | = 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to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date error[E0658]: yield syntax is experimental --> $DIR/feature-gate-coroutines.rs:18:5 | LL | yield; | ^^^^^ | = 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to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date error[E0658]: yield syntax is experimental --> $DIR/feature-gate-coroutines.rs:19:5 | LL | yield 0; | ^^^^^^^ | = 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to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date error[E0658]: yield syntax is experimental --> $DIR/feature-gate-coroutines.rs:5:5 | LL | yield true; | ^^^^^^^^^^ | = 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to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date error: `yield` can only be used in `#[coroutine]` closures, or `gen` blocks --> $DIR/feature-gate-coroutines.rs:5:5 | LL | yield true; | ^^^^^^^^^^ | help: use `#[coroutine]` to make this closure a coroutine | LL | #[coroutine] fn main() { | ++++++++++++ error[E0658]: yield syntax is experimental --> $DIR/feature-gate-coroutines.rs:10:16 | LL | let _ = || yield true; | ^^^^^^^^^^ | = 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to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date error: `yield` can only be used in `#[coroutine]` closures, or `gen` blocks --> $DIR/feature-gate-coroutines.rs:10:16 | LL | let _ = || yield true; | ^^^^^^^^^^ | help: use `#[coroutine]` to make this closure a coroutine | LL | let _ = #[coroutine] || yield true; | ++++++++++++ error[E0627]: yield expression outside of coroutine literal --> $DIR/feature-gate-coroutines.rs:5:5 | LL | yield true; | ^^^^^^^^^^ error: aborting due to 9 previous errors Some errors have detailed explanations: E0627, E0658. For more information about an error, try `rustc --explain E0627`.