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error[E0277]: the trait bound `&_: main::Ref` is not satisfied
--> $DIR/trait-selection-sanity.rs:28:19
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LL | let (&_, b) = generic();
| ^^^^^^^^^ the trait `main::Ref` is not implemented for `&_`
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= help: the trait `main::Ref` is implemented for `&'static mut [(); 0]`
note: required by a bound in `generic`
--> $DIR/trait-selection-sanity.rs:7:19
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LL | fn generic<R: Ref>() -> (R, bool) {
| ^^^ required by this bound in `generic`
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0277`.
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