error[E0384]: cannot assign twice to immutable variable `x`
  --> $DIR/suggest-ref-mut-issue-118596.rs:4:9
   |
LL |     if let Some(x) = y {
   |                 - first assignment to `x`
LL |         x = 2;
   |         ^^^^^ cannot assign twice to immutable variable
   |
help: consider making this binding mutable
   |
LL |     if let Some(mut x) = y {
   |                 ~~~~~
help: to modify the original value, take a borrow instead
   |
LL |     if let Some(ref mut x) = y {
   |                 ~~~~~~~~~

error[E0384]: cannot assign twice to immutable variable `x`
  --> $DIR/suggest-ref-mut-issue-118596.rs:9:5
   |
LL |     let [x, ref xs_hold @ ..] = arr;
   |          - first assignment to `x`
LL |     x = 0;
   |     ^^^^^ cannot assign twice to immutable variable
   |
help: consider making this binding mutable
   |
LL |     let [mut x, ref xs_hold @ ..] = arr;
   |          ~~~~~
help: to modify the original value, take a borrow instead
   |
LL |     let [ref mut x, ref xs_hold @ ..] = arr;
   |          ~~~~~~~~~

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0384`.