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`
```
58 lines
2.0 KiB
Plaintext
58 lines
2.0 KiB
Plaintext
error[E0277]: the trait bound `B: Clone` is not satisfied
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--> $DIR/issue-79224.rs:18:29
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LL | impl<B: ?Sized> Display for Cow<'_, B> {
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| ^^^^^^^^^^ the trait `Clone` is not implemented for `B`
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= note: required for `B` to implement `ToOwned`
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help: consider further restricting this bound
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LL | impl<B: ?Sized + std::clone::Clone> Display for Cow<'_, B> {
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| +++++++++++++++++++
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error[E0277]: the trait bound `B: Clone` is not satisfied
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--> $DIR/issue-79224.rs:20:5
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LL | fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Clone` is not implemented for `B`
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= note: required for `B` to implement `ToOwned`
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help: consider further restricting this bound
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LL | impl<B: ?Sized + std::clone::Clone> Display for Cow<'_, B> {
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| +++++++++++++++++++
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error[E0277]: the trait bound `B: Clone` is not satisfied
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--> $DIR/issue-79224.rs:20:13
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LL | fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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| ^^^^ the trait `Clone` is not implemented for `B`
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= note: required for `B` to implement `ToOwned`
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help: consider further restricting this bound
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LL | impl<B: ?Sized + std::clone::Clone> Display for Cow<'_, B> {
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| +++++++++++++++++++
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error[E0277]: the trait bound `B: Clone` is not satisfied
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--> $DIR/issue-79224.rs:20:62
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LL | fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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| ______________________________________________________________^
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LL | |
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LL | |
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LL | |
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LL | | write!(f, "foo")
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LL | | }
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| |_____^ the trait `Clone` is not implemented for `B`
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= note: required for `B` to implement `ToOwned`
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help: consider further restricting this bound
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LL | impl<B: ?Sized + std::clone::Clone> Display for Cow<'_, B> {
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| +++++++++++++++++++
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error: aborting due to 4 previous errors
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For more information about this error, try `rustc --explain E0277`.
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