error[E0499]: cannot borrow `*f` as mutable more than once at a time
  --> $DIR/moves-based-on-type-no-recursive-stack-closure.rs:20:27
   |
LL |                     (f.c)(f, true);
   |                     ----- ^ second mutable borrow occurs here
   |                     |
   |                     first mutable borrow occurs here
   |                     first borrow later used by call

error[E0382]: borrow of moved value: `f`
  --> $DIR/moves-based-on-type-no-recursive-stack-closure.rs:32:5
   |
LL | fn conspirator<F>(mut f: F) where F: FnMut(&mut R, bool) {
   |                   ----- move occurs because `f` has type `F`, which does not implement the `Copy` trait
LL |     let mut r = R {c: Box::new(f)};
   |                                - value moved here
LL |     f(&mut r, false)
   |     ^ value borrowed here after move
   |
help: consider further restricting this bound with `+ Copy`
  --> $DIR/moves-based-on-type-no-recursive-stack-closure.rs:30:35
   |
LL | fn conspirator<F>(mut f: F) where F: FnMut(&mut R, bool) {
   |                                   ^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0382, E0499.
For more information about an error, try `rustc --explain E0382`.
