error[E0597]: `c2` does not live long enough
  --> $DIR/vec-must-not-hide-type-from-dropck.rs:117:24
   |
LL |     let (mut c1, mut c2);
   |                  ------ binding `c2` declared here
...
LL |     c1.v[0].v.set(Some(&c2));
   |                        ^^^ borrowed value does not live long enough
...
LL | }
   | -
   | |
   | `c2` dropped here while still borrowed
   | borrow might be used here, when `c1` is dropped and runs the destructor for type `C<'_>`
   |
   = note: values in a scope are dropped in the opposite order they are defined

error[E0597]: `c1` does not live long enough
  --> $DIR/vec-must-not-hide-type-from-dropck.rs:119:24
   |
LL |     let (mut c1, mut c2);
   |          ------ binding `c1` declared here
...
LL |     c2.v[0].v.set(Some(&c1));
   |                        ^^^ borrowed value does not live long enough
LL |
LL | }
   | -
   | |
   | `c1` dropped here while still borrowed
   | borrow might be used here, when `c1` is dropped and runs the destructor for type `C<'_>`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0597`.