LL | fn foo_fail<T: Trait>() -> impl FooLike<Output = T::Assoc> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch resolving `<Foo<()> as FooLike>::Output == <T as impl_trait::Trait>::Assoc`
|
-note: expected this to be `<T as impl_trait::Trait>::Assoc`
+note: expected this to be `()`
--> $DIR/bound-normalization-fail.rs:14:19
|
LL | type Output = T;
| ^
- = note: expected associated type `<T as impl_trait::Trait>::Assoc`
- found unit type `()`
+ = note: expected unit type `()`
+ found associated type `<T as impl_trait::Trait>::Assoc`
+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[E0271]: type mismatch resolving `<Foo<()> as FooLike>::Output == <T as impl_trait::Trait>::Assoc`
+ --> $DIR/bound-normalization-fail.rs:25:64
+ |
+LL | fn foo_fail<T: Trait>() -> impl FooLike<Output = T::Assoc> {
+ | ________________________________________________________________^
+LL | |
+LL | |
+LL | | Foo(())
+LL | | }
+ | |_____^ type mismatch resolving `<Foo<()> as FooLike>::Output == <T as impl_trait::Trait>::Assoc`
+ |
+note: expected this to be `()`
+ --> $DIR/bound-normalization-fail.rs:14:19
+ |
+LL | type Output = T;
+ | ^
+ = note: expected unit type `()`
+ found associated type `<T as impl_trait::Trait>::Assoc`
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:41:41
+ --> $DIR/bound-normalization-fail.rs:42:41
|
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:41:41
+ --> $DIR/bound-normalization-fail.rs:42:41
|
LL | fn foo2_fail<'a, T: Trait<'a>>() -> impl FooLike<Output = T::Assoc> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch resolving `<Foo<()> as FooLike>::Output == <T as lifetimes::Trait<'static>>::Assoc`
|
-note: expected this to be `<T as lifetimes::Trait<'static>>::Assoc`
+note: expected this to be `()`
+ --> $DIR/bound-normalization-fail.rs:14:19
+ |
+LL | type Output = T;
+ | ^
+ = note: expected unit type `()`
+ found associated type `<T as lifetimes::Trait<'static>>::Assoc`
+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[E0271]: type mismatch resolving `<Foo<()> as FooLike>::Output == <T as lifetimes::Trait<'static>>::Assoc`
+ --> $DIR/bound-normalization-fail.rs:42:73
+ |
+LL | fn foo2_fail<'a, T: Trait<'a>>() -> impl FooLike<Output = T::Assoc> {
+ | _________________________________________________________________________^
+LL | |
+LL | |
+LL | |
+LL | | Foo(())
+LL | | }
+ | |_____^ type mismatch resolving `<Foo<()> as FooLike>::Output == <T as lifetimes::Trait<'static>>::Assoc`
+ |
+note: expected this to be `()`
--> $DIR/bound-normalization-fail.rs:14:19
|
LL | type Output = T;
| ^
- = note: expected associated type `<T as lifetimes::Trait<'static>>::Assoc`
- found unit type `()`
+ = note: expected unit type `()`
+ found associated type `<T as lifetimes::Trait<'static>>::Assoc`
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
+error: aborting due to 5 previous errors
Some errors have detailed explanations: E0271, E0760.
For more information about an error, try `rustc --explain E0271`.