tests/ui/borrowck/borrowck-consume-upcast-box.stderr

   1 error[E0382]: use of moved value: `b`
   2   --> $DIR/borrowck-consume-upcast-box.rs:10:13
   3    |
   4 LL | fn foo(b: Box<dyn Foo + Send>) {
   5    |        - move occurs because `b` has type `Box<dyn Foo + Send>`, which does not implement the `Copy` trait
   6 LL |     consume(b);
   7    |             - value moved here
   8 LL |     consume(b);
   9    |             ^ value used here after move
  10    |
  11 note: consider changing this parameter type in function `consume` to borrow instead if owning the value isn't necessary
  12   --> $DIR/borrowck-consume-upcast-box.rs:5:15
  13    |
  14 LL | fn consume(_: Box<dyn Foo>) {
  15    |    -------    ^^^^^^^^^^^^ this parameter takes ownership of the value
  16    |    |
  17    |    in this function
  18
  19 error: aborting due to previous error
  20
  21 For more information about this error, try `rustc --explain E0382`.