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`
```
32 lines
1.4 KiB
Plaintext
32 lines
1.4 KiB
Plaintext
error[E0277]: the size for values of type `str` cannot be known at compilation time
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--> $DIR/unsized-ret.rs:10:11
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LL | foo::<fn() -> str, _>(None, ());
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| ^^^^^^^^^^^ doesn't have a size known at compile-time
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= help: within `fn() -> str`, the trait `Sized` is not implemented for `str`
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= note: required because it appears within the type `fn() -> str`
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note: required by a bound in `foo`
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--> $DIR/unsized-ret.rs:5:11
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LL | fn foo<F: Fn<T>, T:std::marker::Tuple>(f: Option<F>, t: T) {
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| ^^^^^ required by this bound in `foo`
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error[E0277]: the size for values of type `(dyn std::fmt::Display + 'a)` cannot be known at compilation time
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--> $DIR/unsized-ret.rs:13:11
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LL | foo::<for<'a> fn(&'a ()) -> (dyn std::fmt::Display + 'a), _>(None, (&(),));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
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= help: within `for<'a> fn(&'a ()) -> (dyn std::fmt::Display + 'a)`, the trait `for<'a> Sized` is not implemented for `(dyn std::fmt::Display + 'a)`
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= note: required because it appears within the type `for<'a> fn(&'a ()) -> (dyn std::fmt::Display + 'a)`
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note: required by a bound in `foo`
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--> $DIR/unsized-ret.rs:5:11
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LL | fn foo<F: Fn<T>, T:std::marker::Tuple>(f: Option<F>, t: T) {
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| ^^^^^ required by this bound in `foo`
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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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