warning: fields `field_1` and `field_2` are never read
  --> $DIR/issue-87987.rs:5:5
   |
LL | struct Props {
   |        ----- fields in this struct
LL |     field_1: u32,
   |     ^^^^^^^
LL |     field_2: u32,
   |     ^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: 1 warning emitted