1 error[E0277]: the trait bound `Bar: std::hash::Hash` is not satisfied
2 --> $DIR/issue-21160.rs:18:12
5 | ^^^ the trait `std::hash::Hash` is not implemented for `Bar`
7 = note: required by `std::hash::Hash::hash`
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0277`.