warning: trait objects without an explicit `dyn` are deprecated
  --> $DIR/ice-hir-wf-check-anon-const-issue-122989.rs:2:20
   |
LL | trait Foo<const N: Bar<2>> {
   |                    ^^^^^^
   |
   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
   = note: `#[warn(bare_trait_objects)]` on by default
help: if this is a dyn-compatible trait, use `dyn`
   |
LL | trait Foo<const N: dyn Bar<2>> {
   |                    +++

warning: trait objects without an explicit `dyn` are deprecated
  --> $DIR/ice-hir-wf-check-anon-const-issue-122989.rs:11:20
   |
LL | trait Bar<const M: Foo<2>> {}
   |                    ^^^^^^
   |
   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is a dyn-compatible trait, use `dyn`
   |
LL | trait Bar<const M: dyn Foo<2>> {}
   |                    +++

error[E0391]: cycle detected when computing type of `Foo::N`
  --> $DIR/ice-hir-wf-check-anon-const-issue-122989.rs:2:11
   |
LL | trait Foo<const N: Bar<2>> {
   |           ^^^^^^^^^^^^^^^
   |
note: ...which requires computing type of `Bar::M`...
  --> $DIR/ice-hir-wf-check-anon-const-issue-122989.rs:11:11
   |
LL | trait Bar<const M: Foo<2>> {}
   |           ^^^^^^^^^^^^^^^
   = note: ...which again requires computing type of `Foo::N`, completing the cycle
note: cycle used when computing explicit predicates of trait `Foo`
  --> $DIR/ice-hir-wf-check-anon-const-issue-122989.rs:2:1
   |
LL | trait Foo<const N: Bar<2>> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
   = 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 `Foo` cannot be made into an object
  --> $DIR/ice-hir-wf-check-anon-const-issue-122989.rs:2:24
   |
LL | trait Foo<const N: Bar<2>> {
   |                        ^ `Foo` 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/ice-hir-wf-check-anon-const-issue-122989.rs:8:8
   |
LL | trait Foo<const N: Bar<2>> {
   |       --- this trait cannot be made into an object...
...
LL |     fn func() {}
   |        ^^^^ ...because associated function `func` has no `self` parameter
help: consider turning `func` into a method by giving it a `&self` argument
   |
LL |     fn func(&self) {}
   |             +++++
help: alternatively, consider constraining `func` so it does not apply to trait objects
   |
LL |     fn func() where Self: Sized {}
   |               +++++++++++++++++

error: `(dyn Bar<2> + 'static)` is forbidden as the type of a const generic parameter
  --> $DIR/ice-hir-wf-check-anon-const-issue-122989.rs:2:20
   |
LL | trait Foo<const N: Bar<2>> {
   |                    ^^^^^^
   |
   = note: the only supported types are integers, `bool`, and `char`

error[E0038]: the trait `Foo` cannot be made into an object
  --> $DIR/ice-hir-wf-check-anon-const-issue-122989.rs:11:11
   |
LL | trait Bar<const M: Foo<2>> {}
   |           ^^^^^^^^^^^^^^^ `Foo` 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/ice-hir-wf-check-anon-const-issue-122989.rs:8:8
   |
LL | trait Foo<const N: Bar<2>> {
   |       --- this trait cannot be made into an object...
...
LL |     fn func() {}
   |        ^^^^ ...because associated function `func` has no `self` parameter
help: consider turning `func` into a method by giving it a `&self` argument
   |
LL |     fn func(&self) {}
   |             +++++
help: alternatively, consider constraining `func` so it does not apply to trait objects
   |
LL |     fn func() where Self: Sized {}
   |               +++++++++++++++++

error: `(dyn Foo<2> + 'static)` is forbidden as the type of a const generic parameter
  --> $DIR/ice-hir-wf-check-anon-const-issue-122989.rs:11:20
   |
LL | trait Bar<const M: Foo<2>> {}
   |                    ^^^^^^
   |
   = note: the only supported types are integers, `bool`, and `char`

error: aborting due to 5 previous errors; 2 warnings emitted

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