3f2a63a68b
```
help: consider restricting type parameter `T` with traits `Copy` and `Trait`
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LL | fn duplicate_custom<T: Copy + Trait>(t: S<T>) -> (S<T>, S<T>) {
| ++++++++++++++
```
```
help: consider restricting type parameter `V` with trait `Copy`
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LL | fn index<'a, K, V: std::marker::Copy>(map: &'a HashMap<K, V>, k: K) -> &'a V {
| +++++++++++++++++++
```
16 lines
487 B
Text
16 lines
487 B
Text
error[E0368]: binary assignment operation `+=` cannot be applied to type `T`
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--> $DIR/issue-6738.rs:6:9
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LL | self.x += v.x;
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| ------^^^^^^^
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| cannot use `+=` on type `T`
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help: consider restricting type parameter `T` with trait `AddAssign`
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LL | impl<T: std::ops::AddAssign> Foo<T> {
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0368`.
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