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warning: the feature `impl_trait_in_bindings` is incomplete and may not be safe to use and/or cause compiler crashes
--> $DIR/bound-normalization-fail.rs:3:12
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LL | #![feature(impl_trait_in_bindings)]
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: `#[warn(incomplete_features)]` on by default
= note: see issue #63065 <https://github.com/rust-lang/rust/issues/63065> for more information
error[E0271]: type mismatch resolving `<Foo<()> as FooLike>::Output == <T as impl_trait::Trait>::Assoc`
--> $DIR/bound-normalization-fail.rs:26:32
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LL | fn foo_fail<T: Trait>() -> impl FooLike<Output=T::Assoc> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected associated type, found `()`
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= note: expected associated type `<T as impl_trait::Trait>::Assoc`
found type `()`
help: consider constraining the associated type `<T as impl_trait::Trait>::Assoc` to `()`
|
LL | fn foo_fail<T: Trait<Assoc = ()>>() -> impl FooLike<Output=T::Assoc> {
| ^^^^^^^^^^^^
error[E0760]: `impl Trait` return type cannot contain a projection or `Self` that references lifetimes from a parent scope
--> $DIR/bound-normalization-fail.rs:42:41
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LL | fn foo2_fail<'a, T: Trait<'a>>() -> impl FooLike<Output=T::Assoc> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0271]: type mismatch resolving `<Foo<()> as FooLike>::Output == <T as lifetimes::Trait<'static>>::Assoc`
--> $DIR/bound-normalization-fail.rs:42:41
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LL | fn foo2_fail<'a, T: Trait<'a>>() -> impl FooLike<Output=T::Assoc> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected associated type, found `()`
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= note: expected associated type `<T as lifetimes::Trait<'static>>::Assoc`
found type `()`
help: consider constraining the associated type `<T as lifetimes::Trait<'static>>::Assoc` to `()`
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LL | fn foo2_fail<'a, T: Trait<'a, Assoc = ()>>() -> impl FooLike<Output=T::Assoc> {
| ^^^^^^^^^^^^
error: aborting due to 3 previous errors; 1 warning emitted
Some errors have detailed explanations: E0271, E0760.
For more information about an error, try `rustc --explain E0271`.
|
