error[E0597]: `d1` does not live long enough
  --> $DIR/issue-24895-copy-clone-dropck.rs:27:14
   |
LL |     let (d2, d1);
   |              -- binding `d1` declared here
LL |     d1 = D(34, "d1");
LL |     d2 = D(S(&d1, "inner"), "d2");
   |              ^^^ borrowed value does not live long enough
LL | }
   | -
   | |
   | `d1` dropped here while still borrowed
   | borrow might be used here, when `d2` is dropped and runs the `Drop` code for type `D`
   |
   = note: values in a scope are dropped in the opposite order they are defined

error: aborting due to previous error

For more information about this error, try `rustc --explain E0597`.