error[E0706]: functions in traits cannot be declared `async` --> $DIR/async-trait-fn.rs:4:5 | LL | async fn foo() {} | -----^^^^^^^^^ | | | `async` because of this | = note: `async` trait functions are not currently supported = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait = note: see issue #91611 for more information = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable error[E0706]: functions in traits cannot be declared `async` --> $DIR/async-trait-fn.rs:5:5 | LL | async fn bar(&self) {} | -----^^^^^^^^^^^^^^ | | | `async` because of this | = note: `async` trait functions are not currently supported = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait = note: see issue #91611 for more information = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable error[E0706]: functions in traits cannot be declared `async` --> $DIR/async-trait-fn.rs:6:5 | LL | async fn baz() { | -----^^^^^^^^^ | | | `async` because of this | = note: `async` trait functions are not currently supported = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait = note: see issue #91611 for more information = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0706`.