error[E0391]: cycle detected when expanding type alias `Alias`
  --> $DIR/type-alias-bounds-are-enforced.rs:19:1
   |
LL | pub type Alias<T: Bound> = (Source<T>::Assoc,);
   | ^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: ...which requires computing the variances of `Source`...
  --> $DIR/type-alias-bounds-are-enforced.rs:21:1
   |
LL | pub struct Source<T>(T);
   | ^^^^^^^^^^^^^^^^^^^^
   = note: ...which requires computing the variances for items in this crate...
   = note: ...which again requires expanding type alias `Alias`, completing the cycle
note: cycle used when collecting item types in top-level module
  --> $DIR/type-alias-bounds-are-enforced.rs:5:1
   |
LL | / #![feature(inherent_associated_types)]
LL | | #![allow(incomplete_features)]
LL | |
LL | | // Bounds on the self type play a major role in the resolution of inherent associated types (*).
...  |
LL | |     pub type Assoc = ();
LL | | }
   | |_^
   = 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[E0391]: cycle detected when expanding type alias `Alias`
  --> $DIR/type-alias-bounds-are-enforced.rs:19:1
   |
LL | pub type Alias<T: Bound> = (Source<T>::Assoc,);
   | ^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: ...which requires computing the variances of `Source`...
  --> $DIR/type-alias-bounds-are-enforced.rs:21:1
   |
LL | pub struct Source<T>(T);
   | ^^^^^^^^^^^^^^^^^^^^
   = note: ...which requires computing the variances for items in this crate...
   = note: ...which again requires expanding type alias `Alias`, completing the cycle
note: cycle used when collecting item types in top-level module
  --> $DIR/type-alias-bounds-are-enforced.rs:5:1
   |
LL | / #![feature(inherent_associated_types)]
LL | | #![allow(incomplete_features)]
LL | |
LL | | // Bounds on the self type play a major role in the resolution of inherent associated types (*).
...  |
LL | |     pub type Assoc = ();
LL | | }
   | |_^
   = 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 2 previous errors

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