error: fields `field1`, `field2`, `field3` and `field4` are never read
  --> $DIR/clone-debug-dead-code-in-the-same-struct.rs:6:5
   |
LL | pub struct Whatever {
   |            -------- fields in this struct
LL |     pub field0: (),
LL |     field1: (),
   |     ^^^^^^
LL |     field2: (),
   |     ^^^^^^
LL |     field3: (),
   |     ^^^^^^
LL |     field4: (),
   |     ^^^^^^
   |
note: the lint level is defined here
  --> $DIR/clone-debug-dead-code-in-the-same-struct.rs:1:11
   |
LL | #![forbid(dead_code)]
   |           ^^^^^^^^^
   = note: `Whatever` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis

error: aborting due to previous error