src/test/ui/infinite/infinite-vec-type-recursion.stderr

error[E0391]: cycle detected when processing `X`
  --> $DIR/infinite-vec-type-recursion.rs:1:14
   |
LL | type X = Vec<X>;
   |              ^
   |
   = note: ...which again requires processing `X`, completing the cycle

error: aborting due to previous error

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