blob: b663cccbeef0f192da5e7d6b530a45f3bd974925 [file] [log] [blame]
error[E0308]: mismatched types
--> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:5:5
|
LL | fn foo() -> impl std::fmt::Display {
| ---------------------- expected because this return type...
LL | if false {
LL | return 0i32;
| ---- ...is found to be `i32` here
LL | }
LL | 1u32
| ^^^^ expected `i32`, found `u32`
|
= note: to return `impl Trait`, all returned values must be of the same type
= note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits>
= help: you can instead return a boxed trait object using `Box<dyn std::fmt::Display>`
= note: for information on trait objects, see <https://doc.rust-lang.org/book/ch17-02-trait-objects.html#using-trait-objects-that-allow-for-values-of-different-types>
= help: alternatively, create a new `enum` with a variant for each returned type
error[E0308]: mismatched types
--> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:13:16
|
LL | fn bar() -> impl std::fmt::Display {
| ---------------------- expected because this return type...
LL | if false {
LL | return 0i32;
| ---- ...is found to be `i32` here
LL | } else {
LL | return 1u32;
| ^^^^ expected `i32`, found `u32`
|
= note: to return `impl Trait`, all returned values must be of the same type
= note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits>
= help: you can instead return a boxed trait object using `Box<dyn std::fmt::Display>`
= note: for information on trait objects, see <https://doc.rust-lang.org/book/ch17-02-trait-objects.html#using-trait-objects-that-allow-for-values-of-different-types>
= help: alternatively, create a new `enum` with a variant for each returned type
error[E0308]: mismatched types
--> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:22:9
|
LL | fn baz() -> impl std::fmt::Display {
| ---------------------- expected because this return type...
LL | if false {
LL | return 0i32;
| ---- ...is found to be `i32` here
LL | } else {
LL | 1u32
| ^^^^ expected `i32`, found `u32`
|
= note: to return `impl Trait`, all returned values must be of the same type
= note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits>
= help: you can instead return a boxed trait object using `Box<dyn std::fmt::Display>`
= note: for information on trait objects, see <https://doc.rust-lang.org/book/ch17-02-trait-objects.html#using-trait-objects-that-allow-for-values-of-different-types>
= help: alternatively, create a new `enum` with a variant for each returned type
error[E0308]: `if` and `else` have incompatible types
--> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:31:9
|
LL | / if false {
LL | | 0i32
| | ---- expected because of this
LL | | } else {
LL | | 1u32
| | ^^^^ expected `i32`, found `u32`
LL | |
LL | | }
| |_____- `if` and `else` have incompatible types
error[E0308]: mismatched types
--> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:39:14
|
LL | fn bat() -> impl std::fmt::Display {
| ---------------------- expected because this return type...
LL | match 13 {
LL | 0 => return 0i32,
| ---- ...is found to be `i32` here
LL | _ => 1u32,
| ^^^^ expected `i32`, found `u32`
|
= note: to return `impl Trait`, all returned values must be of the same type
= note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits>
= help: you can instead return a boxed trait object using `Box<dyn std::fmt::Display>`
= note: for information on trait objects, see <https://doc.rust-lang.org/book/ch17-02-trait-objects.html#using-trait-objects-that-allow-for-values-of-different-types>
= help: alternatively, create a new `enum` with a variant for each returned type
error[E0308]: mismatched types
--> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:45:5
|
LL | fn can() -> impl std::fmt::Display {
| ---------------------- expected because this return type...
LL | / match 13 {
LL | |
LL | | 0 => return 0i32,
| | ---- ...is found to be `i32` here
LL | | 1 => 1u32,
LL | | _ => 2u32,
LL | | }
| |_____^ expected `i32`, found `u32`
|
= note: to return `impl Trait`, all returned values must be of the same type
= note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits>
= help: you can instead return a boxed trait object using `Box<dyn std::fmt::Display>`
= note: for information on trait objects, see <https://doc.rust-lang.org/book/ch17-02-trait-objects.html#using-trait-objects-that-allow-for-values-of-different-types>
= help: alternatively, create a new `enum` with a variant for each returned type
error[E0308]: mismatched types
--> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:59:13
|
LL | fn cat() -> impl std::fmt::Display {
| ---------------------- expected because this return type...
...
LL | return 0i32;
| ---- ...is found to be `i32` here
...
LL | 1u32
| ^^^^ expected `i32`, found `u32`
|
= note: to return `impl Trait`, all returned values must be of the same type
= note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits>
= help: you can instead return a boxed trait object using `Box<dyn std::fmt::Display>`
= note: for information on trait objects, see <https://doc.rust-lang.org/book/ch17-02-trait-objects.html#using-trait-objects-that-allow-for-values-of-different-types>
= help: alternatively, create a new `enum` with a variant for each returned type
error: aborting due to 7 previous errors
For more information about this error, try `rustc --explain E0308`.