1 error[E0404]: expected trait, found type alias `Foo`
2 --> $DIR/issue-3907.rs:11:6
5 | ^^^ type aliases cannot be used as traits
7 help: you might have meant to use `#![feature(trait_alias)]` instead of a `type` alias
9 LL | trait Foo = dyn issue_3907::Foo;
11 help: consider importing this trait instead
13 LL | use issue_3907::Foo;
16 error: aborting due to previous error
18 For more information about this error, try `rustc --explain E0404`.