error[E0433]: cannot find macro `Ok` in enum `Result`
  --> $DIR/macro-path-prelude-fail-2.rs:3:9
   |
LL |         Result::Ok!();
   |         ^^^^^^^^^^ a macro can't exist within an enum

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0433`.
