| 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:4:12 |
| | |
| 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:27:32 |
| | |
| LL | fn foo_fail<T: Trait>() -> impl FooLike<Output=T::Assoc> { |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `()`, found associated type |
| | |
| = note: expected type `()` |
| found associated type `<T as impl_trait::Trait>::Assoc` |
| = note: the return type of a function must have a statically known size |
| 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:43:41 |
| | |
| 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:43:41 |
| | |
| LL | fn foo2_fail<'a, T: Trait<'a>>() -> impl FooLike<Output=T::Assoc> { |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `()`, found associated type |
| | |
| = note: expected type `()` |
| found associated type `<T as lifetimes::Trait<'static>>::Assoc` |
| = note: the return type of a function must have a statically known size |
| help: consider constraining the associated type `<T as lifetimes::Trait<'static>>::Assoc` to `()` |
| | |
| 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`. |