error[E0391]: cycle detected when computing type of `make_dyn_star::{opaque#0}`
  --> $DIR/param-env-region-infer.rs:16:60
   |
LL | fn make_dyn_star<'a, T: PointerLike + Debug + 'a>(t: T) -> impl PointerLike + Debug + 'a {
   |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: ...which requires type-checking `make_dyn_star`...
  --> $DIR/param-env-region-infer.rs:16:1
   |
LL | fn make_dyn_star<'a, T: PointerLike + Debug + 'a>(t: T) -> impl PointerLike + Debug + 'a {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = note: ...which requires computing layout of `make_dyn_star::{opaque#0}`...
   = note: ...which requires normalizing `make_dyn_star::{opaque#0}`...
   = note: ...which again requires computing type of `make_dyn_star::{opaque#0}`, completing the cycle
note: cycle used when checking item types in top-level module
  --> $DIR/param-env-region-infer.rs:10:1
   |
LL | / #![feature(dyn_star, pointer_like_trait)]
LL | | #![allow(incomplete_features)]
LL | |
LL | | use std::fmt::Debug;
...  |
LL | |
LL | | fn main() {}
   | |____________^
   = 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: aborting due to previous error

For more information about this error, try `rustc --explain E0391`.