error[E0509]: cannot move out of type `S`, which implements the `Drop` trait
  --> $DIR/borrowck-struct-update-with-dtor.rs:12:15
   |
LL |     let _s2 = S{a: 2, ..s0};
   |               ^^^^^^^^^^^^^
   |               |
   |               cannot move out of here
   |               move occurs because `s0.b` has type `B`, which does not implement the `Copy` trait

error[E0509]: cannot move out of type `T`, which implements the `Drop` trait
  --> $DIR/borrowck-struct-update-with-dtor.rs:17:15
   |
LL |     let _s2 = T{a: 2, ..s0};
   |               ^^^^^^^^^^^^^
   |               |
   |               cannot move out of here
   |               move occurs because `s0.mv` has type `std::boxed::Box<isize>`, which does not implement the `Copy` trait

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0509`.