3aac307ca6
When encountering an unsatisfied trait bound, if there are no other
suggestions, mention all the types that *do* implement that trait:
```
error[E0277]: the trait bound `f32: Foo` is not satisfied
--> $DIR/impl_wf.rs:22:6
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LL | impl Baz<f32> for f32 { }
| ^^^^^^^^ the trait `Foo` is not implemented for `f32`
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= help: the following other types implement trait `Foo`:
Option<T>
i32
str
note: required by a bound in `Baz`
--> $DIR/impl_wf.rs:18:31
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LL | trait Baz<U: ?Sized> where U: Foo { }
| ^^^ required by this bound in `Baz`
```
Mention implementers of traits in `ImplObligation`s.
Do not mention other `impl`s for closures, ranges and `?`.
84 lines
3.5 KiB
Plaintext
84 lines
3.5 KiB
Plaintext
error[E0277]: the type `[isize]` cannot be indexed by `u8`
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--> $DIR/integral-indexing.rs:6:5
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LL | v[3u8];
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| ^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[isize]>` is not implemented for `u8`
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= help: the trait `SliceIndex<[T]>` is implemented for `usize`
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= note: required because of the requirements on the impl of `Index<u8>` for `Vec<isize>`
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error[E0277]: the type `[isize]` cannot be indexed by `i8`
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--> $DIR/integral-indexing.rs:7:5
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LL | v[3i8];
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| ^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[isize]>` is not implemented for `i8`
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= help: the trait `SliceIndex<[T]>` is implemented for `usize`
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= note: required because of the requirements on the impl of `Index<i8>` for `Vec<isize>`
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error[E0277]: the type `[isize]` cannot be indexed by `u32`
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--> $DIR/integral-indexing.rs:8:5
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LL | v[3u32];
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| ^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[isize]>` is not implemented for `u32`
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= help: the trait `SliceIndex<[T]>` is implemented for `usize`
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= note: required because of the requirements on the impl of `Index<u32>` for `Vec<isize>`
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error[E0277]: the type `[isize]` cannot be indexed by `i32`
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--> $DIR/integral-indexing.rs:9:5
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LL | v[3i32];
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| ^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[isize]>` is not implemented for `i32`
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= help: the trait `SliceIndex<[T]>` is implemented for `usize`
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= note: required because of the requirements on the impl of `Index<i32>` for `Vec<isize>`
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error[E0277]: the type `[u8]` cannot be indexed by `u8`
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--> $DIR/integral-indexing.rs:12:5
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LL | s.as_bytes()[3u8];
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| ^^^^^^^^^^^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[u8]>` is not implemented for `u8`
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= help: the trait `SliceIndex<[T]>` is implemented for `usize`
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= note: required because of the requirements on the impl of `Index<u8>` for `[u8]`
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error[E0277]: the type `[u8]` cannot be indexed by `i8`
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--> $DIR/integral-indexing.rs:13:5
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LL | s.as_bytes()[3i8];
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| ^^^^^^^^^^^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[u8]>` is not implemented for `i8`
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= help: the trait `SliceIndex<[T]>` is implemented for `usize`
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= note: required because of the requirements on the impl of `Index<i8>` for `[u8]`
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error[E0277]: the type `[u8]` cannot be indexed by `u32`
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--> $DIR/integral-indexing.rs:14:5
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LL | s.as_bytes()[3u32];
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| ^^^^^^^^^^^^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[u8]>` is not implemented for `u32`
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= help: the trait `SliceIndex<[T]>` is implemented for `usize`
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= note: required because of the requirements on the impl of `Index<u32>` for `[u8]`
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error[E0277]: the type `[u8]` cannot be indexed by `i32`
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--> $DIR/integral-indexing.rs:15:5
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LL | s.as_bytes()[3i32];
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| ^^^^^^^^^^^^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[u8]>` is not implemented for `i32`
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= help: the trait `SliceIndex<[T]>` is implemented for `usize`
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= note: required because of the requirements on the impl of `Index<i32>` for `[u8]`
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error: aborting due to 8 previous errors
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For more information about this error, try `rustc --explain E0277`.
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