error[E0382]: borrow of moved value: `n`
  --> $DIR/use-after-move-implicity-coerced-object.rs:28:13
   |
LL |     let n: Box<_> = Number { n: 42 }.into();
   |         - move occurs because `n` has type `Box<Number>`, which does not implement the `Copy` trait
LL |     let mut l: Box<_> = List { list: Vec::new() }.into();
LL |     l.push(n);
   |            - value moved here
LL |
LL |     let x = n.to_string();
   |             ^ value borrowed here after move
   |
note: consider changing this parameter type in method `push` to borrow instead if owning the value isn't necessary
  --> $DIR/use-after-move-implicity-coerced-object.rs:17:27
   |
LL |     fn push(&mut self, n: Box<dyn ToString + 'static>) {
   |        ----               ^^^^^^^^^^^^^^^^^^^^^^^^^^^ this parameter takes ownership of the value
   |        |
   |        in this method
note: if `Number` implemented `Clone`, you could clone the value
  --> $DIR/use-after-move-implicity-coerced-object.rs:3:1
   |
LL | struct Number {
   | ^^^^^^^^^^^^^ consider implementing `Clone` for this type
...
LL |     l.push(n);
   |            - you could clone this value

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0382`.