error: type could implement `Copy`; consider adding `impl Copy`
  --> $DIR/lint-missing-copy-implementations.rs:6:5
   |
LL | /     pub struct Foo { //~ ERROR type could implement `Copy`; consider adding `impl Copy`
LL | |         pub field: i32
LL | |     }
   | |_____^
   |
note: lint level defined here
  --> $DIR/lint-missing-copy-implementations.rs:3:9
   |
LL | #![deny(missing_copy_implementations)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error