1 error[E0038]: the trait `Bar` cannot be made into an object
2 --> $DIR/issue-18959.rs:11:1
4 LL | fn foo(b: &dyn Bar) {
5 | ^^^^^^^^^^^^^^^^^^^ the trait `Bar` cannot be made into an object
7 = note: method `foo` has generic type parameters
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0038`.