tests/ui/move-expr/nested-closures-mutate-before-call.stderr

error[E0502]: cannot borrow `x` as mutable because it is also borrowed as immutable
  --> $DIR/nested-closures-mutate-before-call.rs:14:5
   |
LL |     let outer = || {
   |                 -- immutable borrow occurs here
LL |         let inner = || move(x.clone());
   |                             - first borrow occurs due to use of `x` in closure
...
LL |     x.push_str("more test");
   |     ^^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
LL |
LL |     outer();
   |     ----- immutable borrow later used here

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0502`.