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error: the `min` method cannot be invoked on `&dyn Iterator<Item = &u64>`
--> $DIR/imm-ref-trait-object.rs:2:8
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LL | t.min().unwrap()
| ^^^
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help: you need `&mut dyn Iterator<Item = &u64>` instead of `&dyn Iterator<Item = &u64>`
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LL | fn test(t: &mut dyn Iterator<Item=&u64>) -> u64 {
| +++
error: aborting due to 1 previous error
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