1 error[E0596]: cannot borrow `r` as mutable, as it is immutable for the pattern guard
2 --> $DIR/issue-27282-reborrow-ref-mut-in-guard.rs:12:25
4 LL | ref mut r if { (|| { let bar = &mut *r; **bar = false; })();
5 | ^^ -- mutable borrow occurs due to use of `r` in closure
7 | cannot borrow as mutable
9 = note: variables bound in patterns are immutable until the end of the pattern guard
11 error: aborting due to previous error
13 For more information about this error, try `rustc --explain E0596`.