1error[E0038]: the trait `Trait` cannot be made into an object 2 --> tests/ui/no-attribute-macro.rs:12:12 3 | 412 | let _: &dyn Trait; 5 | ^^^^^^^^^^ `Trait` cannot be made into an object 6 | 7note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety> 8 --> tests/ui/no-attribute-macro.rs:2:14 9 | 101 | pub trait Trait { 11 | ----- this trait cannot be made into an object... 122 | async fn method(&self); 13 | ^^^^^^ ...because method `method` is `async` 14 = help: consider moving `method` to another trait 15