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https://github.com/rust-lang/rust
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6efddac288
Expand the primary span of E0277 when the immediate unmet bound is not what the user wrote:
```
error[E0277]: the trait bound `i32: Bar` is not satisfied
--> f100.rs:6:6
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6 | <i32 as Foo>::foo();
| ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
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help: this trait has no implementations, consider adding one
--> f100.rs:2:1
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2 | trait Bar {}
| ^^^^^^^^^
note: required for `i32` to implement `Foo`
--> f100.rs:3:14
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3 | impl<T: Bar> Foo for T {}
| --- ^^^ ^
| |
| unsatisfied trait bound introduced here
```
Fix #40120.
92 lines
4.1 KiB
Plaintext
92 lines
4.1 KiB
Plaintext
error[E0277]: the type `[isize]` cannot be indexed by `u8`
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--> $DIR/integral-indexing.rs:6:7
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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`, which is required by `Vec<isize>: Index<_>`
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= help: the trait `SliceIndex<[isize]>` is implemented for `usize`
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= help: for that trait implementation, expected `usize`, found `u8`
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= note: required for `Vec<isize>` to implement `Index<u8>`
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error[E0277]: the type `[isize]` cannot be indexed by `i8`
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--> $DIR/integral-indexing.rs:7:7
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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`, which is required by `Vec<isize>: Index<_>`
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= help: the trait `SliceIndex<[isize]>` is implemented for `usize`
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= help: for that trait implementation, expected `usize`, found `i8`
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= note: required for `Vec<isize>` to implement `Index<i8>`
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error[E0277]: the type `[isize]` cannot be indexed by `u32`
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--> $DIR/integral-indexing.rs:8:7
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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`, which is required by `Vec<isize>: Index<_>`
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= help: the trait `SliceIndex<[isize]>` is implemented for `usize`
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= help: for that trait implementation, expected `usize`, found `u32`
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= note: required for `Vec<isize>` to implement `Index<u32>`
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error[E0277]: the type `[isize]` cannot be indexed by `i32`
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--> $DIR/integral-indexing.rs:9:7
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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`, which is required by `Vec<isize>: Index<_>`
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= help: the trait `SliceIndex<[isize]>` is implemented for `usize`
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= help: for that trait implementation, expected `usize`, found `i32`
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= note: required for `Vec<isize>` to implement `Index<i32>`
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error[E0277]: the type `[u8]` cannot be indexed by `u8`
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--> $DIR/integral-indexing.rs:12:18
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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`, which is required by `[u8]: Index<_>`
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= help: the trait `SliceIndex<[u8]>` is implemented for `usize`
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= help: for that trait implementation, expected `usize`, found `u8`
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= note: required for `[u8]` to implement `Index<u8>`
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error[E0277]: the type `[u8]` cannot be indexed by `i8`
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--> $DIR/integral-indexing.rs:13:18
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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`, which is required by `[u8]: Index<_>`
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= help: the trait `SliceIndex<[u8]>` is implemented for `usize`
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= help: for that trait implementation, expected `usize`, found `i8`
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= note: required for `[u8]` to implement `Index<i8>`
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error[E0277]: the type `[u8]` cannot be indexed by `u32`
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--> $DIR/integral-indexing.rs:14:18
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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`, which is required by `[u8]: Index<_>`
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= help: the trait `SliceIndex<[u8]>` is implemented for `usize`
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= help: for that trait implementation, expected `usize`, found `u32`
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= note: required for `[u8]` to implement `Index<u32>`
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error[E0277]: the type `[u8]` cannot be indexed by `i32`
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--> $DIR/integral-indexing.rs:15:18
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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`, which is required by `[u8]: Index<_>`
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= help: the trait `SliceIndex<[u8]>` is implemented for `usize`
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= help: for that trait implementation, expected `usize`, found `i32`
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= note: required for `[u8]` to implement `Index<i32>`
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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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