error[E0308]: mismatched types
  --> $DIR/issue-14541.rs:15:9
   |
LL |     let vec3 { y: _, z: _ } = v;
   |         ^^^^^^^^^^^^^^^^^^^ expected struct `vec2`, found struct `vec3`
   |
   = note: expected type `vec2`
              found type `vec3`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0308`.