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error[E0594]: cannot assign to `t.v`, which is behind a `&` reference
--> $DIR/suggest-mut-method-for-loop.rs:14:9
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LL | for mut t in buzz.values() {
| -------------
| | |
| | help: use mutable method: `values_mut()`
| this iterator yields `&` references
...
LL | t.v += 1;
| ^^^^^^^^ `t` is a `&` reference, so the data it refers to cannot be written
error: aborting due to previous error
For more information about this error, try `rustc --explain E0594`.
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