error[E0425]: cannot find value `bar` in this scope
  --> $DIR/not_wf_param_in_rpitit.rs:3:34
   |
LL | trait Trait<const N: dyn Trait = bar> {
   |                                  ^^^ not found in this scope

error[E0391]: cycle detected when computing type of `Trait::N`
  --> $DIR/not_wf_param_in_rpitit.rs:3:26
   |
LL | trait Trait<const N: dyn Trait = bar> {
   |                          ^^^^^
   |
   = note: ...which immediately requires computing type of `Trait::N` again
note: cycle used when computing explicit predicates of trait `Trait`
  --> $DIR/not_wf_param_in_rpitit.rs:3:1
   |
LL | trait Trait<const N: dyn Trait = bar> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information

error[E0038]: the trait `Trait` cannot be made into an object
  --> $DIR/not_wf_param_in_rpitit.rs:3:22
   |
LL | trait Trait<const N: dyn Trait = bar> {
   |                      ^^^^^^^^^ `Trait` cannot be made into an object
   |
note: for a trait to be "dyn-compatible" 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/not_wf_param_in_rpitit.rs:9:14
   |
LL | trait Trait<const N: dyn Trait = bar> {
   |       ----- this trait cannot be made into an object...
...
LL |     async fn a() {}
   |              ^ ...because associated function `a` has no `self` parameter
help: consider turning `a` into a method by giving it a `&self` argument
   |
LL |     async fn a(&self) {}
   |                +++++
help: alternatively, consider constraining `a` so it does not apply to trait objects
   |
LL |     async fn a() where Self: Sized {}
   |                  +++++++++++++++++

error[E0038]: the trait `Trait` cannot be made into an object
  --> $DIR/not_wf_param_in_rpitit.rs:3:13
   |
LL | trait Trait<const N: dyn Trait = bar> {
   |             ^^^^^^^^^^^^^^^^^^^^^^^^ `Trait` cannot be made into an object
   |
note: for a trait to be "dyn-compatible" 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/not_wf_param_in_rpitit.rs:9:14
   |
LL | trait Trait<const N: dyn Trait = bar> {
   |       ----- this trait cannot be made into an object...
...
LL |     async fn a() {}
   |              ^ ...because associated function `a` has no `self` parameter
help: consider turning `a` into a method by giving it a `&self` argument
   |
LL |     async fn a(&self) {}
   |                +++++
help: alternatively, consider constraining `a` so it does not apply to trait objects
   |
LL |     async fn a() where Self: Sized {}
   |                  +++++++++++++++++

error[E0038]: the trait `Trait` cannot be made into an object
  --> $DIR/not_wf_param_in_rpitit.rs:3:13
   |
LL | trait Trait<const N: dyn Trait = bar> {
   |             ^^^^^^^^^^^^^^^^^^^^^^^^ `Trait` cannot be made into an object
   |
note: for a trait to be "dyn-compatible" 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/not_wf_param_in_rpitit.rs:9:14
   |
LL | trait Trait<const N: dyn Trait = bar> {
   |       ----- this trait cannot be made into an object...
...
LL |     async fn a() {}
   |              ^ ...because associated function `a` has no `self` parameter
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
help: consider turning `a` into a method by giving it a `&self` argument
   |
LL |     async fn a(&self) {}
   |                +++++
help: alternatively, consider constraining `a` so it does not apply to trait objects
   |
LL |     async fn a() where Self: Sized {}
   |                  +++++++++++++++++

error: aborting due to 5 previous errors

Some errors have detailed explanations: E0038, E0391, E0425.
For more information about an error, try `rustc --explain E0038`.