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`
```
36 lines
1.4 KiB
Plaintext
36 lines
1.4 KiB
Plaintext
error[E0277]: the trait bound `Bar: Copy` is not satisfied
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--> $DIR/migrate-fail.rs:11:38
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LL | let arr: [Option<Bar>; 2] = [x; 2];
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| ^ the trait `Copy` is not implemented for `Bar`
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= note: required for `Option<Bar>` to implement `Copy`
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= note: the `Copy` trait is required because this value will be copied for each element of the array
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= help: consider using `core::array::from_fn` to initialize the array
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= help: see https://doc.rust-lang.org/stable/std/array/fn.from_fn.html for more information
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help: consider annotating `Bar` with `#[derive(Copy)]`
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LL + #[derive(Copy)]
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LL | struct Bar;
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error[E0277]: the trait bound `Bar: Copy` is not satisfied
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--> $DIR/migrate-fail.rs:17:38
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LL | let arr: [Option<Bar>; 2] = [x; 2];
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| ^ the trait `Copy` is not implemented for `Bar`
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= note: required for `Option<Bar>` to implement `Copy`
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= note: the `Copy` trait is required because this value will be copied for each element of the array
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= help: consider using `core::array::from_fn` to initialize the array
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= help: see https://doc.rust-lang.org/stable/std/array/fn.from_fn.html for more information
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help: consider annotating `Bar` with `#[derive(Copy)]`
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LL + #[derive(Copy)]
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LL | struct Bar;
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0277`.
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