error[E0521]: borrowed data escapes outside of closure
  --> tests/ui/handle-with-wrong-perm.rs:18:13
   |
8  |     cache1.scope(|mut handle1, perm1| {
   |                   ----------- `handle1` declared here, outside of the closure body
...
13 |         cache2.scope(|_handle2, mut perm2| {
   |                       -------- `_handle2` is a reference that is only valid in the closure body
...
18 |             handle1.put("a", "".to_string(), &mut perm2);
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `_handle2` escapes the closure body here
   |
   = note: requirement occurs because of a mutable reference to `ValuePerm<'_>`
   = note: mutable references are invariant over their type parameter
   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance

error[E0521]: borrowed data escapes outside of closure
  --> tests/ui/handle-with-wrong-perm.rs:18:13
   |
8  |     cache1.scope(|mut handle1, perm1| {
   |                   -----------
   |                   |
   |                   `handle1` is a reference that is only valid in the closure body
   |                   has type `CacheHandle<'_, '1, &str, String>`
...
18 |             handle1.put("a", "".to_string(), &mut perm2);
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |             |
   |             `handle1` escapes the closure body here
   |             argument requires that `'1` must outlive `'static`

error[E0521]: borrowed data escapes outside of closure
  --> tests/ui/handle-with-wrong-perm.rs:34:13
   |
25 |     cache1.scope(|_handle1, mut perm1| {
   |                             --------- `perm1` declared here, outside of the closure body
...
29 |         cache2.scope(move |mut handle2, perm2| {
   |                            ----------- `handle2` is a reference that is only valid in the closure body
...
34 |             handle2.put("a", "".to_string(), &mut perm1);
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `handle2` escapes the closure body here
   |
   = note: requirement occurs because of a mutable reference to `CacheHandle<'_, '_, &str, String>`
   = note: mutable references are invariant over their type parameter
   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance

error[E0521]: borrowed data escapes outside of closure
  --> tests/ui/handle-with-wrong-perm.rs:34:13
   |
25 |     cache1.scope(|_handle1, mut perm1| {
   |                   --------
   |                   |
   |                   `_handle1` is a reference that is only valid in the closure body
   |                   has type `CacheHandle<'_, '1, &str, String>`
...
34 |             handle2.put("a", "".to_string(), &mut perm1);
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |             |
   |             `_handle1` escapes the closure body here
   |             argument requires that `'1` must outlive `'static`