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error[E0277]: `T` cannot be unpinned
--> $DIR/issue-90164.rs:5:10
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LL | copy(r, w);
| ---- ^ the trait `Unpin` is not implemented for `T`
| |
| required by a bound introduced by this call
|
= note: consider using `Box::pin`
note: required by a bound in `copy`
--> $DIR/issue-90164.rs:1:12
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LL | fn copy<R: Unpin, W>(_: R, _: W) {}
| ^^^^^ required by this bound in `copy`
help: consider restricting type parameter `T`
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LL | fn f<T: std::marker::Unpin>(r: T) {
| ++++++++++++++++++++
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.
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