error[E0532]: expected tuple struct or tuple variant, found variant `FooB`
  --> $DIR/issue-19086.rs:10:9
   |
LL |     FooB { x: i32, y: i32 }
   |     ----------------------- `FooB` defined here
...
LL |         FooB(a, b) => println!("{} {}", a, b),
   |         ^^^^^^^^^^ help: use struct pattern syntax instead: `FooB { x: a, y: b }`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0532`.