mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
febb3f7c88
rust/tests/ui/errors/trait-bound-error-spans/blame-trait-error.stderr
Esteban Küber 6efddac288 Provide more context on derived obligation error primary label 
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 |     <i32 as Foo>::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<T: Bar> Foo for T {}
  |         ---  ^^^     ^
  |         |
  |         unsatisfied trait bound introduced here
```

Fix #40120.
2024-01-30 21:28:18 +00:00

403 lines
15 KiB
Plaintext
Raw Blame History

error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:53:46
|
LL | want(Wrapper { value: Burrito { filling: q } });
| ---- ^ the trait `T3` is not implemented for `Q`, which is required by `Wrapper<Burrito<Q>>: T1`
| |
| required by a bound introduced by this call
|
note: required for `Burrito<Q>` to implement `T2`
--> $DIR/blame-trait-error.rs:11:13
|
LL | impl<A: T3> T2 for Burrito<A> {}
| -- ^^ ^^^^^^^^^^
| |
| unsatisfied trait bound introduced here
note: required for `Wrapper<Burrito<Q>>` to implement `T1`
--> $DIR/blame-trait-error.rs:6:13
|
LL | impl<B: T2> T1 for Wrapper<B> {}
| -- ^^ ^^^^^^^^^^
| |
| unsatisfied trait bound introduced here
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: `()` is not an iterator
--> $DIR/blame-trait-error.rs:56:15
|
LL | want(Some(()));
| ---- ^^ `()` is not an iterator
| |
| required by a bound introduced by this call
|
= help: the trait `Iterator` is not implemented for `()`, which is required by `Option<()>: T1`
= help: the trait `T1` is implemented for `Option<It>`
note: required for `Option<()>` to implement `T1`
--> $DIR/blame-trait-error.rs:21:20
|
LL | impl<It: Iterator> T1 for Option<It> {}
| -------- ^^ ^^^^^^^^^^
| |
| unsatisfied trait bound introduced here
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
error[E0277]: `Q` is not an iterator
--> $DIR/blame-trait-error.rs:59:15
|
LL | want(Some(q));
| ---- ^ `Q` is not an iterator
| |
| required by a bound introduced by this call
|
note: required for `Option<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:21:20
|
LL | impl<It: Iterator> T1 for Option<It> {}
| -------- ^^ ^^^^^^^^^^
| |
| unsatisfied trait bound introduced here
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: std::iter::Iterator>(q: Q) {
| +++++++++++++++++++++
error[E0277]: `Q` is not an iterator
--> $DIR/blame-trait-error.rs:62:16
|
LL | want(&Some(q));
| ---- ^ `Q` is not an iterator
| |
| required by a bound introduced by this call
|
note: required for `Option<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:21:20
|
LL | impl<It: Iterator> T1 for Option<It> {}
| -------- ^^ ^^^^^^^^^^
| |
| unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&Option<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: std::iter::Iterator>(q: Q) {
| +++++++++++++++++++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:65:45
|
LL | want(&ExampleTuple::ExampleTupleVariant(q));
| ---- ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleTuple<Q>: T1`
| |
| required by a bound introduced by this call
|
note: required for `ExampleTuple<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:35:9
|
LL | impl<A> T1 for ExampleTuple<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleTuple<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:68:31
|
LL | want(&ExampleTupleVariant(q));
| ---- ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleTuple<Q>: T1`
| |
| required by a bound introduced by this call
|
note: required for `ExampleTuple<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:35:9
|
LL | impl<A> T1 for ExampleTuple<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleTuple<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:71:50
|
LL | want(&ExampleOtherTuple::ExampleTupleVariant(q));
| ---- ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleTuple<Q>: T1`
| |
| required by a bound introduced by this call
|
note: required for `ExampleTuple<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:35:9
|
LL | impl<A> T1 for ExampleTuple<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleTuple<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:74:44
|
LL | want(&ExampleDifferentTupleVariantName(q));
| ---- ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleTuple<Q>: T1`
| |
| required by a bound introduced by this call
|
note: required for `ExampleTuple<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:35:9
|
LL | impl<A> T1 for ExampleTuple<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleTuple<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:77:45
|
LL | want(&ExampleYetAnotherTupleVariantName(q));
| ---- ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleTuple<Q>: T1`
| |
| required by a bound introduced by this call
|
note: required for `ExampleTuple<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:35:9
|
LL | impl<A> T1 for ExampleTuple<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleTuple<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:80:56
|
LL | want(&ExampleStruct::ExampleStructVariant { field: q });
| ---- required by a bound introduced by this call ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleStruct<Q>: T1`
|
note: required for `ExampleStruct<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:45:9
|
LL | impl<A> T1 for ExampleStruct<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleStruct<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:83:41
|
LL | want(&ExampleStructVariant { field: q });
| ---- ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleStruct<Q>: T1`
| |
| required by a bound introduced by this call
|
note: required for `ExampleStruct<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:45:9
|
LL | impl<A> T1 for ExampleStruct<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleStruct<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:86:61
|
LL | want(&ExampleOtherStruct::ExampleStructVariant { field: q });
| ---- required by a bound introduced by this call ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleStruct<Q>: T1`
|
note: required for `ExampleStruct<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:45:9
|
LL | impl<A> T1 for ExampleStruct<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleStruct<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:89:54
|
LL | want(&ExampleDifferentStructVariantName { field: q });
| ---- required by a bound introduced by this call ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleStruct<Q>: T1`
|
note: required for `ExampleStruct<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:45:9
|
LL | impl<A> T1 for ExampleStruct<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleStruct<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:92:55
|
LL | want(&ExampleYetAnotherStructVariantName { field: q });
| ---- required by a bound introduced by this call ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleStruct<Q>: T1`
|
note: required for `ExampleStruct<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:45:9
|
LL | impl<A> T1 for ExampleStruct<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleStruct<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:95:38
|
LL | want(&ExampleActuallyTupleStruct(q, 0));
| ---- ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleActuallyTupleStruct<Q>: T1`
| |
| required by a bound introduced by this call
|
note: required for `ExampleActuallyTupleStruct<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:50:9
|
LL | impl<A> T1 for ExampleActuallyTupleStruct<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleActuallyTupleStruct<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error[E0277]: the trait bound `Q: T3` is not satisfied
--> $DIR/blame-trait-error.rs:98:43
|
LL | want(&ExampleActuallyTupleStructOther(q, 0));
| ---- ^ the trait `T3` is not implemented for `Q`, which is required by `&ExampleActuallyTupleStruct<Q>: T1`
| |
| required by a bound introduced by this call
|
note: required for `ExampleActuallyTupleStruct<Q>` to implement `T1`
--> $DIR/blame-trait-error.rs:50:9
|
LL | impl<A> T1 for ExampleActuallyTupleStruct<A> where A: T3 {}
| ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -- unsatisfied trait bound introduced here
= note: 1 redundant requirement hidden
= note: required for `&ExampleActuallyTupleStruct<Q>` to implement `T1`
note: required by a bound in `want`
--> $DIR/blame-trait-error.rs:25:12
|
LL | fn want<V: T1>(_x: V) {}
| ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
|
LL | fn example<Q: T3>(q: Q) {
| ++++
error: aborting due to 16 previous errors
For more information about this error, try `rustc --explain E0277`.
Reference in New Issue View Git Blame Copy Permalink