mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 15:01:51 +00:00
22 lines
922 B
Plaintext
22 lines
922 B
Plaintext
error[E0277]: the trait bound `for<'a> <_ as Yokeable<'a>>::Output: IsCovariant<'a>` is not satisfied
|
|
--> $DIR/issue-90950.rs:50:12
|
|
|
|
|
LL | upcast(y)
|
|
| ------ ^ the trait `for<'a> IsCovariant<'a>` is not implemented for `<_ as Yokeable<'a>>::Output`
|
|
| |
|
|
| required by a bound introduced by this call
|
|
|
|
|
= help: the trait `IsCovariant<'a>` is implemented for `std::borrow::Cow<'a, T>`
|
|
note: required by a bound in `upcast`
|
|
--> $DIR/issue-90950.rs:27:42
|
|
|
|
|
LL | fn upcast<Y>(x: Yoke<Y>) -> Yoke<Box<dyn IsCovariant<'static> + 'static>> where
|
|
| ------ required by a bound in this
|
|
LL | Y: for<'a> Yokeable<'a>,
|
|
LL | for<'a> <Y as Yokeable<'a>>::Output: IsCovariant<'a>
|
|
| ^^^^^^^^^^^^^^^ required by this bound in `upcast`
|
|
|
|
error: aborting due to previous error
|
|
|
|
For more information about this error, try `rustc --explain E0277`.
|