rust/tests/ui/rfcs/rfc-2294-if-let-guard/guard-mutability-1.stderr

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error[E0596]: cannot borrow `y.0` as mutable, as it is immutable for the pattern guard
--> $DIR/guard-mutability-1.rs:8:33
|
LL | Some(mut y) if let Some(ref mut z) = y => {
| ^^^^^^^^^ cannot borrow as mutable
|
= note: variables bound in patterns are immutable until the end of the pattern guard
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0596`.