error[E0596]: cannot borrow `*rofl` as mutable, as it is behind a `&` reference
  --> $DIR/issue-85765-closure.rs:6:9
   |
LL |         rofl.push(Vec::new());
   |         ^^^^ `rofl` is a `&` reference, so the data it refers to cannot be borrowed as mutable
   |
help: consider changing this binding's type
   |
LL |         let rofl: &mut Vec<Vec<i32>> = &mut test;
   |                   ~~~~~~~~~~~~~~~~~~

error[E0594]: cannot assign to `*r`, which is behind a `&` reference
  --> $DIR/issue-85765-closure.rs:13:9
   |
LL |         *r = 0;
   |         ^^^^^^ `r` is a `&` reference, so the data it refers to cannot be written
   |
help: consider changing this to be a mutable reference
   |
LL |         let r = &mut mutvar;
   |                  +++

error[E0594]: cannot assign to `*x`, which is behind a `&` reference
  --> $DIR/issue-85765-closure.rs:20:9
   |
LL |         *x = 1;
   |         ^^^^^^ `x` is a `&` reference, so the data it refers to cannot be written
   |
help: consider changing this binding's type
   |
LL |         let x: &mut usize = &mut{0};
   |                ~~~~~~~~~~

error[E0594]: cannot assign to `*y`, which is behind a `&` reference
  --> $DIR/issue-85765-closure.rs:27:9
   |
LL |         *y = 1;
   |         ^^^^^^ `y` is a `&` reference, so the data it refers to cannot be written
   |
help: consider changing this binding's type
   |
LL |         let y: &mut usize = &mut(0);
   |                ~~~~~~~~~~

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0594, E0596.
For more information about an error, try `rustc --explain E0594`.