warning: the feature `unsized_locals` is incomplete and may not be safe to use and/or cause compiler crashes --> $DIR/unsized-across-await.rs:3:12 | LL | #![feature(unsized_locals)] | ^^^^^^^^^^^^^^ | = note: see issue #48055 for more information = note: `#[warn(incomplete_features)]` on by default error[E0277]: the size for values of type `dyn std::fmt::Display` cannot be known at compilation time --> $DIR/unsized-across-await.rs:9:9 | LL | let _x = *x; | ^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `dyn std::fmt::Display` = note: all values live across `await` must have a statically known size error: aborting due to 1 previous error; 1 warning emitted For more information about this error, try `rustc --explain E0277`.