error[E0038]: the trait `Bar` is not dyn compatible
  --> $DIR/generics.rs:15:31
   |
LL | fn make_bar<T:Bar>(t: &T) -> &dyn Bar {
   |                               ^^^^^^^ `Bar` is not dyn compatible
   |
note: for a trait to be dyn compatible it needs to allow building a vtable
      for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
  --> $DIR/generics.rs:7:8
   |
LL | trait Bar {
   |       --- this trait is not dyn compatible...
LL |     fn bar<T>(&self, t: T);
   |        ^^^ ...because method `bar` has generic type parameters
   = help: consider moving `bar` to another trait

error[E0038]: the trait `Bar` is not dyn compatible
  --> $DIR/generics.rs:20:40
   |
LL | fn make_bar_explicit<T:Bar>(t: &T) -> &dyn Bar {
   |                                        ^^^^^^^ `Bar` is not dyn compatible
   |
note: for a trait to be dyn compatible it needs to allow building a vtable
      for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
  --> $DIR/generics.rs:7:8
   |
LL | trait Bar {
   |       --- this trait is not dyn compatible...
LL |     fn bar<T>(&self, t: T);
   |        ^^^ ...because method `bar` has generic type parameters
   = help: consider moving `bar` to another trait

error[E0038]: the trait `Bar` is not dyn compatible
  --> $DIR/generics.rs:22:15
   |
LL |     t as &dyn Bar
   |               ^^^ `Bar` is not dyn compatible
   |
note: for a trait to be dyn compatible it needs to allow building a vtable
      for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
  --> $DIR/generics.rs:7:8
   |
LL | trait Bar {
   |       --- this trait is not dyn compatible...
LL |     fn bar<T>(&self, t: T);
   |        ^^^ ...because method `bar` has generic type parameters
   = help: consider moving `bar` to another trait

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0038`.