rust/tests/ui/errors/trait-bound-error-spans, branch automation/bors/try

Use trait name instead of full constraint in suggestion message

2024-12-07T21:29:58+00:00

``` help: consider restricting type parameter `T` with traits `Copy` and `Trait` | LL | fn duplicate_custom(t: S) -> (S, S) { | ++++++++++++++ ``` ``` help: consider restricting type parameter `V` with trait `Copy` | LL | fn index<'a, K, V: std::marker::Copy>(map: &'a HashMap, k: K) -> &'a V { | +++++++++++++++++++ ```

reword trait bound suggestion message to include the bounds

2024-12-07T21:26:20+00:00

Remove detail from label/note that is already available in other note

2024-10-29T16:26:57+00:00

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 | LL | static FOO: IsCopy> = IsCopy { t: None }; | ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy` | = note: required for `Option` to implement `Copy` note: required by a bound in `IsCopy` --> $DIR/wf-static-type.rs:7:17 | LL | struct IsCopy { 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 | LL | static FOO: IsCopy> = IsCopy { t: None }; | ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy`, which is required by `Option: Copy` | = note: required for `Option` to implement `Copy` note: required by a bound in `IsCopy` --> $DIR/wf-static-type.rs:7:17 | LL | struct IsCopy { t: T } | ^^^^ required by this bound in `IsCopy` ```

Provide more context on derived obligation error primary label

2024-01-30T21:28:18+00:00

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 | 6 | ::foo(); | ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo` | help: this trait has no implementations, consider adding one --> f100.rs:2:1 | 2 | trait Bar {} | ^^^^^^^^^ note: required for `i32` to implement `Foo` --> f100.rs:3:14 | 3 | impl Foo for T {} | --- ^^^ ^ | | | unsatisfied trait bound introduced here ``` Fix #40120.

Fix error spans for arguments to tuple enum constructors

2023-02-28T22:58:14+00:00

Point error span at Some constructor argument when trait resolution fails

2023-02-28T07:58:35+00:00

Point at specific field in struct literal when trait fulfillment fails

2023-01-23T21:37:58+00:00