5b54286640
Remove the "which is required by `{root_obligation}`" post-script in
"the trait `X` is not implemented for `Y`" explanation in E0277. This
information is already conveyed in the notes explaining requirements,
making it redundant while making the text (particularly in labels)
harder to read.
```
error[E0277]: the trait bound `NotCopy: Copy` is not satisfied
--> $DIR/wf-static-type.rs:10:13
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LL | static FOO: IsCopy<Option<NotCopy>> = IsCopy { t: None };
| ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy`
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= note: required for `Option<NotCopy>` to implement `Copy`
note: required by a bound in `IsCopy`
--> $DIR/wf-static-type.rs:7:17
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LL | struct IsCopy<T:Copy> { t: T }
| ^^^^ required by this bound in `IsCopy`
```
vs the prior
```
error[E0277]: the trait bound `NotCopy: Copy` is not satisfied
--> $DIR/wf-static-type.rs:10:13
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LL | static FOO: IsCopy<Option<NotCopy>> = IsCopy { t: None };
| ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy`, which is required by `Option<NotCopy>: Copy`
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= note: required for `Option<NotCopy>` to implement `Copy`
note: required by a bound in `IsCopy`
--> $DIR/wf-static-type.rs:7:17
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LL | struct IsCopy<T:Copy> { t: T }
| ^^^^ required by this bound in `IsCopy`
```
50 lines
1.8 KiB
Plaintext
50 lines
1.8 KiB
Plaintext
error[E0277]: the trait bound `T: Copy` is not satisfied in `dyn Setup<From = T>`
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--> $DIR/dyn-incompatibility.rs:12:12
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LL | copy::<dyn Setup<From=T>>(t)
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| ^^^^^^^^^^^^^^^^^ within `dyn Setup<From = T>`, the trait `Copy` is not implemented for `T`
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= note: required because it appears within the type `dyn Setup<From = T>`
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note: required by a bound in `copy`
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--> $DIR/dyn-incompatibility.rs:7:12
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LL | fn copy<U: Setup + ?Sized>(from: &U::From) -> U::From {
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| ^^^^^ required by this bound in `copy`
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help: consider restricting type parameter `T`
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LL | pub fn copy_any<T: std::marker::Copy>(t: &T) -> T {
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| +++++++++++++++++++
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error[E0308]: mismatched types
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--> $DIR/dyn-incompatibility.rs:12:31
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LL | copy::<dyn Setup<From=T>>(t)
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| ------------------------- ^ types differ
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| |
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| arguments to this function are incorrect
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= note: expected reference `&<dyn Setup<From = T> as Setup>::From`
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found reference `&T`
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note: function defined here
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--> $DIR/dyn-incompatibility.rs:7:4
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LL | fn copy<U: Setup + ?Sized>(from: &U::From) -> U::From {
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| ^^^^ --------------
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error[E0277]: the trait bound `T: Copy` is not satisfied in `dyn Setup<From = T>`
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--> $DIR/dyn-incompatibility.rs:12:5
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LL | copy::<dyn Setup<From=T>>(t)
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `dyn Setup<From = T>`, the trait `Copy` is not implemented for `T`
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= note: required because it appears within the type `dyn Setup<From = T>`
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help: consider restricting type parameter `T`
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LL | pub fn copy_any<T: std::marker::Copy>(t: &T) -> T {
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| +++++++++++++++++++
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error: aborting due to 3 previous errors
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Some errors have detailed explanations: E0277, E0308.
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For more information about an error, try `rustc --explain E0277`.
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