error[E0038]: the trait `Bar` cannot be made into an object
  --> $DIR/object-safety-generics.rs:18:31
   |
LL | fn make_bar<T:Bar>(t: &T) -> &dyn Bar {
   |                               ^^^^^^^ `Bar` cannot be made into an object
   |
note: 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>
  --> $DIR/object-safety-generics.rs:10:8
   |
LL | trait Bar {
   |       --- this trait cannot be made into an object...
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` cannot be made into an object
  --> $DIR/object-safety-generics.rs:24:40
   |
LL | fn make_bar_explicit<T:Bar>(t: &T) -> &dyn Bar {
   |                                        ^^^^^^^ `Bar` cannot be made into an object
   |
note: 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>
  --> $DIR/object-safety-generics.rs:10:8
   |
LL | trait Bar {
   |       --- this trait cannot be made into an object...
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 2 previous errors

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