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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`
```
67 lines
3.0 KiB
Plaintext
67 lines
3.0 KiB
Plaintext
error[E0666]: nested `impl Trait` is not allowed
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--> $DIR/nested_impl_trait.rs:6:56
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LL | fn bad_in_ret_position(x: impl Into<u32>) -> impl Into<impl Debug> { x }
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| ----------^^^^^^^^^^-
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| | |
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| | nested `impl Trait` here
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| outer `impl Trait`
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error[E0666]: nested `impl Trait` is not allowed
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--> $DIR/nested_impl_trait.rs:10:42
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LL | fn bad_in_fn_syntax(x: fn() -> impl Into<impl Debug>) {}
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| ----------^^^^^^^^^^-
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| | |
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| | nested `impl Trait` here
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| outer `impl Trait`
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error[E0666]: nested `impl Trait` is not allowed
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--> $DIR/nested_impl_trait.rs:14:37
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LL | fn bad_in_arg_position(_: impl Into<impl Debug>) { }
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| ----------^^^^^^^^^^-
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| | |
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| | nested `impl Trait` here
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| outer `impl Trait`
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error[E0666]: nested `impl Trait` is not allowed
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--> $DIR/nested_impl_trait.rs:19:44
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LL | fn bad(x: impl Into<u32>) -> impl Into<impl Debug> { x }
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| ----------^^^^^^^^^^-
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| | |
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| | nested `impl Trait` here
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| outer `impl Trait`
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error[E0562]: `impl Trait` is not allowed in `fn` pointer return types
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--> $DIR/nested_impl_trait.rs:10:32
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LL | fn bad_in_fn_syntax(x: fn() -> impl Into<impl Debug>) {}
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| ^^^^^^^^^^^^^^^^^^^^^
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= note: `impl Trait` is only allowed in arguments and return types of functions and methods
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error[E0277]: the trait bound `impl Debug: From<impl Into<u32>>` is not satisfied
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--> $DIR/nested_impl_trait.rs:6:46
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LL | fn bad_in_ret_position(x: impl Into<u32>) -> impl Into<impl Debug> { x }
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| ^^^^^^^^^^^^^^^^^^^^^ the trait `From<impl Into<u32>>` is not implemented for `impl Debug`
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= help: the trait `Into<U>` is implemented for `T`
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= note: required for `impl Into<u32>` to implement `Into<impl Debug>`
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error[E0277]: the trait bound `impl Debug: From<impl Into<u32>>` is not satisfied
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--> $DIR/nested_impl_trait.rs:19:34
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LL | fn bad(x: impl Into<u32>) -> impl Into<impl Debug> { x }
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| ^^^^^^^^^^^^^^^^^^^^^ the trait `From<impl Into<u32>>` is not implemented for `impl Debug`
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= help: the trait `Into<U>` is implemented for `T`
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= note: required for `impl Into<u32>` to implement `Into<impl Debug>`
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error: aborting due to 7 previous errors
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Some errors have detailed explanations: E0277, E0562, E0666.
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For more information about an error, try `rustc --explain E0277`.
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