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error[E0594]: cannot assign to `self.0`, which is behind a `&` reference
  --> $DIR/suggest-ref-mut.rs:7:9
   |
LL |         self.0 = 32;
   |         ^^^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be written
   |
help: consider changing this to be a mutable reference
   |
LL |     fn zap(&mut self) {
   |            ~~~~~~~~~

error[E0594]: cannot assign to `*foo`, which is behind a `&` reference
  --> $DIR/suggest-ref-mut.rs:16:5
   |
LL |     *foo = 32;
   |     ^^^^^^^^^ `foo` is a `&` reference, so the data it refers to cannot be written
   |
help: consider changing this to be a mutable reference
   |
LL |     let ref mut foo = 16;
   |         ~~~~~~~~~~~

error[E0594]: cannot assign to `*bar`, which is behind a `&` reference
  --> $DIR/suggest-ref-mut.rs:21:9
   |
LL |         *bar = 32;
   |         ^^^^^^^^^ `bar` is a `&` reference, so the data it refers to cannot be written
   |
help: consider changing this to be a mutable reference
   |
LL |     if let Some(ref mut bar) = Some(16) {
   |                 ~~~~~~~~~~~

error[E0594]: cannot assign to `*quo`, which is behind a `&` reference
  --> $DIR/suggest-ref-mut.rs:25:22
   |
LL |         ref quo => { *quo = 32; },
   |                      ^^^^^^^^^ `quo` is a `&` reference, so the data it refers to cannot be written
   |
help: consider changing this to be a mutable reference
   |
LL |         ref mut quo => { *quo = 32; },
   |         ~~~~~~~~~~~

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0594`.