error[E0790]: cannot call associated function on trait without specifying the corresponding `impl` type --> $DIR/issue-104328.rs:10:5 | LL | fn f() {} | --------- `Foo::f` defined here ... LL | Foo::f(); | ^^^^^^^^ cannot call associated function of trait | help: use the fully-qualified path to the only available implementation | LL | <(dyn Sized + 'static) as Foo>::f(); | +++++++++++++++++++++++++ + error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0790`.