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`
```
72 lines
2.9 KiB
Text
72 lines
2.9 KiB
Text
error[E0277]: the trait bound `(): _Contains<&C>` is not satisfied
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--> $DIR/issue-85848.rs:24:29
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LL | writes_to_specific_path(&cap);
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| ----------------------- ^^^^ the trait `_Contains<&C>` is not implemented for `()`
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| |
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| required by a bound introduced by this call
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help: this trait has no implementations, consider adding one
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--> $DIR/issue-85848.rs:4:1
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LL | trait _Contains<T> {
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| ^^^^^^^^^^^^^^^^^^
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note: required for `&C` to implement `Contains<(), true>`
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--> $DIR/issue-85848.rs:21:12
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LL | impl<T, U> Contains<T, { contains::<T, U>() }> for U where T: _Contains<U> {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^ ------------ unsatisfied trait bound introduced here
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note: required for `&C` to implement `Delegates<()>`
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--> $DIR/issue-85848.rs:12:12
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LL | impl<T, U> Delegates<U> for T where T: Contains<U, true> {}
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| ^^^^^^^^^^^^ ^ ----------------- unsatisfied trait bound introduced here
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note: required by a bound in `writes_to_specific_path`
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--> $DIR/issue-85848.rs:30:31
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LL | fn writes_to_specific_path<C: Delegates<()>>(cap: &C) {}
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| ^^^^^^^^^^^^^ required by this bound in `writes_to_specific_path`
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error: unconstrained generic constant
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--> $DIR/issue-85848.rs:24:29
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LL | writes_to_specific_path(&cap);
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| ----------------------- ^^^^
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| |
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| required by a bound introduced by this call
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note: required for `&C` to implement `Contains<(), true>`
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--> $DIR/issue-85848.rs:21:12
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LL | impl<T, U> Contains<T, { contains::<T, U>() }> for U where T: _Contains<U> {}
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| ^^^^^^^^^^^^----------------------^ ^
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| |
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| unsatisfied trait bound introduced here
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note: required for `&C` to implement `Delegates<()>`
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--> $DIR/issue-85848.rs:12:12
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LL | impl<T, U> Delegates<U> for T where T: Contains<U, true> {}
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| ^^^^^^^^^^^^ ^ ----------------- unsatisfied trait bound introduced here
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note: required by a bound in `writes_to_specific_path`
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--> $DIR/issue-85848.rs:30:31
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LL | fn writes_to_specific_path<C: Delegates<()>>(cap: &C) {}
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| ^^^^^^^^^^^^^ required by this bound in `writes_to_specific_path`
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help: try adding a `where` bound
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LL | fn writes_to_path<C>(cap: &C) where [(); { contains::<T, U>() } as usize]: {
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| ++++++++++++++++++++++++++++++++++++++++++++
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error[E0308]: mismatched types
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--> $DIR/issue-85848.rs:24:5
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LL | writes_to_specific_path(&cap);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `true`, found `{ contains::<T, U>() }`
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= note: expected constant `true`
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found constant `{ contains::<T, U>() }`
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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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