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|
error[E0308]: mismatched types
--> $DIR/return-impl-trait-bad.rs:5:5
|
LL | fn bad_echo<T>(_t: T) -> T {
| - - expected `T` because of return type
| |
| expected this type parameter
LL | "this should not suggest impl Trait"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected type parameter `T`, found `&str`
|
= note: expected type parameter `T`
found reference `&'static str`
= note: the caller chooses a type for `T` which can be different from `&'static str`
error[E0308]: mismatched types
--> $DIR/return-impl-trait-bad.rs:9:5
|
LL | fn bad_echo_2<T: Trait>(_t: T) -> T {
| - - expected `T` because of return type
| |
| expected this type parameter
LL | "this will not suggest it, because that would probably be wrong"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected type parameter `T`, found `&str`
|
= note: expected type parameter `T`
found reference `&'static str`
= note: the caller chooses a type for `T` which can be different from `&'static str`
error[E0308]: mismatched types
--> $DIR/return-impl-trait-bad.rs:17:5
|
LL | fn other_bounds_bad<T>() -> T
| - - expected `T` because of return type
| |
| expected this type parameter
...
LL | "don't suggest this, because Option<T> places additional constraints"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected type parameter `T`, found `&str`
|
= note: expected type parameter `T`
found reference `&'static str`
= note: the caller chooses a type for `T` which can be different from `&'static str`
error[E0308]: mismatched types
--> $DIR/return-impl-trait-bad.rs:28:5
|
LL | fn used_in_trait<T>() -> T
| - -
| | |
| | expected `T` because of return type
| | help: consider using an impl return type: `impl Send`
| expected this type parameter
...
LL | "don't suggest this, because the generic param is used in the bound."
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected type parameter `T`, found `&str`
|
= note: expected type parameter `T`
found reference `&'static str`
= note: the caller chooses a type for `T` which can be different from `&'static str`
error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0308`.
|
