error[E0391]: cycle detected when computing the implied predicates of `B`
  --> $DIR/implied-bounds-cycle.rs:5:15
   |
LL | trait B: A<T: B> {}
   |               ^
   |
   = note: ...which immediately requires computing the implied predicates of `B` again
note: cycle used when computing normalized predicates of `B`
  --> $DIR/implied-bounds-cycle.rs:5:1
   |
LL | trait B: A<T: B> {}
   | ^^^^^^^^^^^^^^^^
   = 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 1 previous error

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