error[E0423]: expected value, found struct `X`
  --> $DIR/issue-61226.rs:3:10
   |
LL | struct X {}
   | ----------- `X` defined here
LL | fn main() {
LL |     vec![X]; //…
   |          ^ did you mean `X { /* fields */ }`?

error: aborting due to previous error

For more information about this error, try `rustc --explain E0423`.