error: `derive` attribute cannot be used at crate level
  --> $DIR/issue-121108.rs:1:1
   |
LL | #![derive(Clone, Copy)]
   | ^^^^^^^^^^^^^^^^^^^^^^^
LL |
LL | use std::ptr::addr_of;
   |               ------- the inner attribute doesn't annotate this `use` import
   |
help: perhaps you meant to use an outer attribute
   |
LL - #![derive(Clone, Copy)]
LL + #[derive(Clone, Copy)]
   |

error: aborting due to 1 previous error