diff options
Diffstat (limited to 'src')
29 files changed, 319 insertions, 122 deletions
diff --git a/src/test/ui/expr/malformed_closure/ruby_style_closure.stderr b/src/test/ui/expr/malformed_closure/ruby_style_closure.stderr index 759d79493a9..c7ed8e0de38 100644 --- a/src/test/ui/expr/malformed_closure/ruby_style_closure.stderr +++ b/src/test/ui/expr/malformed_closure/ruby_style_closure.stderr @@ -14,7 +14,7 @@ LL | let p = Some(45).and_then({ LL | | LL | | |x| println!("doubling {}", x); LL | | Some(x * 2) - | | ----------- this tail expression is of type `std::option::Option<_>` + | | ----------- this tail expression is of type `Option<_>` LL | | LL | | }); | |_____^ expected an `FnOnce<({integer},)>` closure, found `Option<_>` diff --git a/src/test/ui/generic-associated-types/issue-101020.stderr b/src/test/ui/generic-associated-types/issue-101020.stderr index b4e94cb83f7..422ac548427 100644 --- a/src/test/ui/generic-associated-types/issue-101020.stderr +++ b/src/test/ui/generic-associated-types/issue-101020.stderr @@ -1,10 +1,8 @@ error[E0277]: the trait bound `for<'a> &'a mut (): Foo<&'a mut ()>` is not satisfied - --> $DIR/issue-101020.rs:31:5 + --> $DIR/issue-101020.rs:31:22 | LL | (&mut EmptyIter).consume(()); - | ^^^^^^^^^^^^^^^^ ------- required by a bound introduced by this call - | | - | the trait `for<'a> Foo<&'a mut ()>` is not implemented for `&'a mut ()` + | ^^^^^^^ the trait `for<'a> Foo<&'a mut ()>` is not implemented for `&'a mut ()` | note: required for `&'a mut ()` to implement `for<'a> FuncInput<'a, &'a mut ()>` --> $DIR/issue-101020.rs:27:20 diff --git a/src/test/ui/issues/issue-20162.stderr b/src/test/ui/issues/issue-20162.stderr index 3f9b3be9851..d70bf6e1d92 100644 --- a/src/test/ui/issues/issue-20162.stderr +++ b/src/test/ui/issues/issue-20162.stderr @@ -1,10 +1,8 @@ error[E0277]: the trait bound `X: Ord` is not satisfied - --> $DIR/issue-20162.rs:5:5 + --> $DIR/issue-20162.rs:5:7 | LL | b.sort(); - | ^ ---- required by a bound introduced by this call - | | - | the trait `Ord` is not implemented for `X` + | ^^^^ the trait `Ord` is not implemented for `X` | note: required by a bound in `slice::<impl [T]>::sort` --> $SRC_DIR/alloc/src/slice.rs:LL:COL diff --git a/src/test/ui/issues/issue-31173.rs b/src/test/ui/issues/issue-31173.rs index 04efa27189b..f678df5b42b 100644 --- a/src/test/ui/issues/issue-31173.rs +++ b/src/test/ui/issues/issue-31173.rs @@ -4,12 +4,11 @@ pub fn get_tok(it: &mut IntoIter<u8>) { let mut found_e = false; let temp: Vec<u8> = it - //~^ ERROR to be an iterator that yields `&_`, but it yields `u8` .take_while(|&x| { found_e = true; false }) - .cloned() + .cloned() //~ ERROR to be an iterator that yields `&_`, but it yields `u8` .collect(); //~ ERROR the method } diff --git a/src/test/ui/issues/issue-31173.stderr b/src/test/ui/issues/issue-31173.stderr index 58d9b564427..62d841f3789 100644 --- a/src/test/ui/issues/issue-31173.stderr +++ b/src/test/ui/issues/issue-31173.stderr @@ -1,16 +1,8 @@ -error[E0271]: expected `TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:8:21: 8:25]>` to be an iterator that yields `&_`, but it yields `u8` - --> $DIR/issue-31173.rs:6:25 - | -LL | let temp: Vec<u8> = it - | _________________________^ -LL | | -LL | | .take_while(|&x| { -LL | | found_e = true; -LL | | false -LL | | }) - | |__________^ expected reference, found `u8` -LL | .cloned() - | ------ required by a bound introduced by this call +error[E0271]: expected `TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>` to be an iterator that yields `&_`, but it yields `u8` + --> $DIR/issue-31173.rs:11:10 + | +LL | .cloned() + | ^^^^^^ expected reference, found `u8` | = note: expected reference `&_` found type `u8` @@ -20,11 +12,11 @@ note: required by a bound in `cloned` LL | Self: Sized + Iterator<Item = &'a T>, | ^^^^^^^^^^^^ required by this bound in `Iterator::cloned` -error[E0599]: the method `collect` exists for struct `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:8:21: 8:25]>>`, but its trait bounds were not satisfied - --> $DIR/issue-31173.rs:13:10 +error[E0599]: the method `collect` exists for struct `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>>`, but its trait bounds were not satisfied + --> $DIR/issue-31173.rs:12:10 | LL | .collect(); - | ^^^^^^^ method cannot be called on `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:8:21: 8:25]>>` due to unsatisfied trait bounds + | ^^^^^^^ method cannot be called on `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>>` due to unsatisfied trait bounds | ::: $SRC_DIR/core/src/iter/adapters/take_while.rs:LL:COL | @@ -37,10 +29,10 @@ LL | pub struct Cloned<I> { | -------------------- doesn't satisfy `_: Iterator` | = note: the following trait bounds were not satisfied: - `<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:8:21: 8:25]> as Iterator>::Item = &_` - which is required by `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:8:21: 8:25]>>: Iterator` - `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:8:21: 8:25]>>: Iterator` - which is required by `&mut Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:8:21: 8:25]>>: Iterator` + `<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]> as Iterator>::Item = &_` + which is required by `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>>: Iterator` + `Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>>: Iterator` + which is required by `&mut Cloned<TakeWhile<&mut std::vec::IntoIter<u8>, [closure@$DIR/issue-31173.rs:7:21: 7:25]>>: Iterator` error: aborting due to 2 previous errors diff --git a/src/test/ui/issues/issue-33941.stderr b/src/test/ui/issues/issue-33941.stderr index c28986a2985..73a9b786fe2 100644 --- a/src/test/ui/issues/issue-33941.stderr +++ b/src/test/ui/issues/issue-33941.stderr @@ -1,10 +1,8 @@ error[E0271]: expected `std::collections::hash_map::Iter<'_, _, _>` to be an iterator that yields `&_`, but it yields `(&_, &_)` - --> $DIR/issue-33941.rs:6:14 + --> $DIR/issue-33941.rs:6:36 | LL | for _ in HashMap::new().iter().cloned() {} - | ^^^^^^^^^^^^^^^^^^^^^ ------ required by a bound introduced by this call - | | - | expected reference, found tuple + | ^^^^^^ expected reference, found tuple | = note: expected reference `&_` found tuple `(&_, &_)` diff --git a/src/test/ui/issues/issue-34334.stderr b/src/test/ui/issues/issue-34334.stderr index 3188cd80cca..b610e5c1366 100644 --- a/src/test/ui/issues/issue-34334.stderr +++ b/src/test/ui/issues/issue-34334.stderr @@ -13,15 +13,23 @@ LL | let sr: Vec<(u32, _, _)> = vec![]; | + error[E0277]: a value of type `Vec<(u32, _, _)>` cannot be built from an iterator over elements of type `()` - --> $DIR/issue-34334.rs:5:33 + --> $DIR/issue-34334.rs:5:87 | LL | let sr2: Vec<(u32, _, _)> = sr.iter().map(|(faction, th_sender, th_receiver)| {}).collect(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------- required by a bound introduced by this call - | | - | value of type `Vec<(u32, _, _)>` cannot be built from `std::iter::Iterator<Item=()>` + | ^^^^^^^ value of type `Vec<(u32, _, _)>` cannot be built from `std::iter::Iterator<Item=()>` | = help: the trait `FromIterator<()>` is not implemented for `Vec<(u32, _, _)>` = help: the trait `FromIterator<T>` is implemented for `Vec<T>` +note: the method call chain might not have had the expected associated types + --> $DIR/issue-34334.rs:5:43 + | +LL | let sr: Vec<(u32, _, _) = vec![]; + | ------ this expression has type `Vec<(_, _, _)>` +... +LL | let sr2: Vec<(u32, _, _)> = sr.iter().map(|(faction, th_sender, th_receiver)| {}).collect(); + | ------ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `Iterator::Item` changed to `()` here + | | + | `Iterator::Item` is `&(_, _, _)` here note: required by a bound in `collect` --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL | diff --git a/src/test/ui/issues/issue-66923-show-error-for-correct-call.stderr b/src/test/ui/issues/issue-66923-show-error-for-correct-call.stderr index ce38c3320bb..c6352978613 100644 --- a/src/test/ui/issues/issue-66923-show-error-for-correct-call.stderr +++ b/src/test/ui/issues/issue-66923-show-error-for-correct-call.stderr @@ -1,13 +1,18 @@ error[E0277]: a value of type `Vec<f64>` cannot be built from an iterator over elements of type `&f64` - --> $DIR/issue-66923-show-error-for-correct-call.rs:8:24 + --> $DIR/issue-66923-show-error-for-correct-call.rs:8:39 | LL | let x2: Vec<f64> = x1.into_iter().collect(); - | ^^^^^^^^^^^^^^ ------- required by a bound introduced by this call - | | - | value of type `Vec<f64>` cannot be built from `std::iter::Iterator<Item=&f64>` + | ^^^^^^^ value of type `Vec<f64>` cannot be built from `std::iter::Iterator<Item=&f64>` | = help: the trait `FromIterator<&f64>` is not implemented for `Vec<f64>` = help: the trait `FromIterator<T>` is implemented for `Vec<T>` +note: the method call chain might not have had the expected associated types + --> $DIR/issue-66923-show-error-for-correct-call.rs:8:27 + | +LL | let x1: &[f64] = &v; + | -- this expression has type `&Vec<f64>` +LL | let x2: Vec<f64> = x1.into_iter().collect(); + | ^^^^^^^^^^^ `Iterator::Item` is `&f64` here note: required by a bound in `collect` --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL | @@ -15,15 +20,21 @@ LL | fn collect<B: FromIterator<Self::Item>>(self) -> B | ^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Iterator::collect` error[E0277]: a value of type `Vec<f64>` cannot be built from an iterator over elements of type `&f64` - --> $DIR/issue-66923-show-error-for-correct-call.rs:12:14 + --> $DIR/issue-66923-show-error-for-correct-call.rs:12:29 | LL | let x3 = x1.into_iter().collect::<Vec<f64>>(); - | ^^^^^^^^^^^^^^ ------- required by a bound introduced by this call - | | - | value of type `Vec<f64>` cannot be built from `std::iter::Iterator<Item=&f64>` + | ^^^^^^^ value of type `Vec<f64>` cannot be built from `std::iter::Iterator<Item=&f64>` | = help: the trait `FromIterator<&f64>` is not implemented for `Vec<f64>` = help: the trait `FromIterator<T>` is implemented for `Vec<T>` +note: the method call chain might not have had the expected associated types + --> $DIR/issue-66923-show-error-for-correct-call.rs:12:17 + | +LL | let x1: &[f64] = &v; + | -- this expression has type `&Vec<f64>` +... +LL | let x3 = x1.into_iter().collect::<Vec<f64>>(); + | ^^^^^^^^^^^ `Iterator::Item` is `&f64` here note: required by a bound in `collect` --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL | diff --git a/src/test/ui/iterators/collect-into-array.rs b/src/test/ui/iterators/collect-into-array.rs index 4c424999b75..99d0d9bd735 100644 --- a/src/test/ui/iterators/collect-into-array.rs +++ b/src/test/ui/iterators/collect-into-array.rs @@ -3,5 +3,4 @@ fn main() { //~^ ERROR an array of type `[u32; 10]` cannot be built directly from an iterator //~| NOTE try collecting into a `Vec<{integer}>`, then using `.try_into()` //~| NOTE required by a bound in `collect` - //~| NOTE required by a bound introduced by this call } diff --git a/src/test/ui/iterators/collect-into-array.stderr b/src/test/ui/iterators/collect-into-array.stderr index 544b1da178a..7a07fed1fae 100644 --- a/src/test/ui/iterators/collect-into-array.stderr +++ b/src/test/ui/iterators/collect-into-array.stderr @@ -1,10 +1,8 @@ error[E0277]: an array of type `[u32; 10]` cannot be built directly from an iterator - --> $DIR/collect-into-array.rs:2:31 + --> $DIR/collect-into-array.rs:2:39 | LL | let whatever: [u32; 10] = (0..10).collect(); - | ^^^^^^^ ------- required by a bound introduced by this call - | | - | try collecting into a `Vec<{integer}>`, then using `.try_into()` + | ^^^^^^^ try collecting into a `Vec<{integer}>`, then using `.try_into()` | = help: the trait `FromIterator<{integer}>` is not implemented for `[u32; 10]` note: required by a bound in `collect` diff --git a/src/test/ui/iterators/collect-into-slice.rs b/src/test/ui/iterators/collect-into-slice.rs index 09832c260d0..5a8aacb1a6d 100644 --- a/src/test/ui/iterators/collect-into-slice.rs +++ b/src/test/ui/iterators/collect-into-slice.rs @@ -13,6 +13,5 @@ fn main() { //~| NOTE all local variables must have a statically known size //~| NOTE doesn't have a size known at compile-time //~| NOTE doesn't have a size known at compile-time - //~| NOTE required by a bound introduced by this call process_slice(&some_generated_vec); } diff --git a/src/test/ui/iterators/collect-into-slice.stderr b/src/test/ui/iterators/collect-into-slice.stderr index 65ef124a463..58da222e039 100644 --- a/src/test/ui/iterators/collect-into-slice.stderr +++ b/src/test/ui/iterators/collect-into-slice.stderr @@ -22,12 +22,10 @@ LL | fn collect<B: FromIterator<Self::Item>>(self) -> B | ^ required by this bound in `Iterator::collect` error[E0277]: a slice of type `[i32]` cannot be built since `[i32]` has no definite size - --> $DIR/collect-into-slice.rs:6:30 + --> $DIR/collect-into-slice.rs:6:38 | LL | let some_generated_vec = (0..10).collect(); - | ^^^^^^^ ------- required by a bound introduced by this call - | | - | try explicitly collecting into a `Vec<{integer}>` + | ^^^^^^^ try explicitly collecting into a `Vec<{integer}>` | = help: the trait `FromIterator<{integer}>` is not implemented for `[i32]` note: required by a bound in `collect` diff --git a/src/test/ui/iterators/invalid-iterator-chain.rs b/src/test/ui/iterators/invalid-iterator-chain.rs new file mode 100644 index 00000000000..87116e49245 --- /dev/null +++ b/src/test/ui/iterators/invalid-iterator-chain.rs @@ -0,0 +1,41 @@ +fn main() { + let scores = vec![(0, 0)] + .iter() + .map(|(a, b)| { + a + b; + }); + println!("{}", scores.sum::<i32>()); //~ ERROR E0277 + println!( + "{}", + vec![0, 1] + .iter() + .map(|x| x * 2) + .map(|x| x as f64) + .map(|x| x as i64) + .filter(|x| *x > 0) + .map(|x| { x + 1 }) + .map(|x| { x; }) + .sum::<i32>(), //~ ERROR E0277 + ); + println!( + "{}", + vec![0, 1] + .iter() + .map(|x| x * 2) + .map(|x| x as f64) + .filter(|x| *x > 0.0) + .map(|x| { x + 1.0 }) + .sum::<i32>(), //~ ERROR E0277 + ); + println!("{}", vec![0, 1].iter().map(|x| { x; }).sum::<i32>()); //~ ERROR E0277 + println!("{}", vec![(), ()].iter().sum::<i32>()); //~ ERROR E0277 + let a = vec![0]; + let b = a.into_iter(); + let c = b.map(|x| x + 1); + let d = c.filter(|x| *x > 10 ); + let e = d.map(|x| { + x + 1; + }); + let f = e.filter(|_| false); + let g: Vec<i32> = f.collect(); //~ ERROR E0277 +} diff --git a/src/test/ui/iterators/invalid-iterator-chain.stderr b/src/test/ui/iterators/invalid-iterator-chain.stderr new file mode 100644 index 00000000000..49651b20fb1 --- /dev/null +++ b/src/test/ui/iterators/invalid-iterator-chain.stderr @@ -0,0 +1,176 @@ +error[E0277]: a value of type `i32` cannot be made by summing an iterator over elements of type `()` + --> $DIR/invalid-iterator-chain.rs:7:27 + | +LL | println!("{}", scores.sum::<i32>()); + | ^^^ value of type `i32` cannot be made by summing a `std::iter::Iterator<Item=()>` + | + = help: the trait `Sum<()>` is not implemented for `i32` + = help: the following other types implement trait `Sum<A>`: + <i32 as Sum<&'a i32>> + <i32 as Sum> +note: the method call chain might not have had the expected associated types + --> $DIR/invalid-iterator-chain.rs:4:10 + | +LL | let scores = vec![(0, 0)] + | ------------ this expression has type `Vec<({integer}, {integer})>` +LL | .iter() + | ------ `Iterator::Item` is `&({integer}, {integer})` here +LL | .map(|(a, b)| { + | __________^ +LL | | a + b; +LL | | }); + | |__________^ `Iterator::Item` changed to `()` here +note: required by a bound in `std::iter::Iterator::sum` + --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL + | +LL | S: Sum<Self::Item>, + | ^^^^^^^^^^^^^^^ required by this bound in `Iterator::sum` + +error[E0277]: a value of type `i32` cannot be made by summing an iterator over elements of type `()` + --> $DIR/invalid-iterator-chain.rs:18:14 + | +LL | .sum::<i32>(), + | ^^^ value of type `i32` cannot be made by summing a `std::iter::Iterator<Item=()>` + | + = help: the trait `Sum<()>` is not implemented for `i32` + = help: the following other types implement trait `Sum<A>`: + <i32 as Sum<&'a i32>> + <i32 as Sum> +note: the method call chain might not have had the expected associated types + --> $DIR/invalid-iterator-chain.rs:12:14 + | +LL | vec![0, 1] + | ---------- this expression has type `Vec<{integer}>` +LL | .iter() + | ------ `Iterator::Item` is `&{integer}` here +LL | .map(|x| x * 2) + | ^^^^^^^^^^^^^^ `Iterator::Item` changed to `{integer}` here +LL | .map(|x| x as f64) + | ----------------- `Iterator::Item` changed to `f64` here +LL | .map(|x| x as i64) + | ----------------- `Iterator::Item` changed to `i64` here +LL | .filter(|x| *x > 0) + | ------------------ `Iterator::Item` remains `i64` here +LL | .map(|x| { x + 1 }) + | ------------------ `Iterator::Item` remains `i64` here +LL | .map(|x| { x; }) + | ^^^^^^^^^^^^^^^ `Iterator::Item` changed to `()` here +note: required by a bound in `std::iter::Iterator::sum` + --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL + | +LL | S: Sum<Self::Item>, + | ^^^^^^^^^^^^^^^ required by this bound in `Iterator::sum` + +error[E0277]: a value of type `i32` cannot be made by summing an iterator over elements of type `f64` + --> $DIR/invalid-iterator-chain.rs:28:14 + | +LL | .sum::<i32>(), + | ^^^ value of type `i32` cannot be made by summing a `std::iter::Iterator<Item=f64>` + | + = help: the trait `Sum<f64>` is not implemented for `i32` + = help: the following other types implement trait `Sum<A>`: + <i32 as Sum<&'a i32>> + <i32 as Sum> +note: the method call chain might not have had the expected associated types + --> $DIR/invalid-iterator-chain.rs:24:14 + | +LL | vec![0, 1] + | ---------- this expression has type `Vec<{integer}>` +LL | .iter() + | ------ `Iterator::Item` is `&{integer}` here +LL | .map(|x| x * 2) + | ^^^^^^^^^^^^^^ `Iterator::Item` changed to `{integer}` here +LL | .map(|x| x as f64) + | ^^^^^^^^^^^^^^^^^ `Iterator::Item` changed to `f64` here +LL | .filter(|x| *x > 0.0) + | -------------------- `Iterator::Item` remains `f64` here +LL | .map(|x| { x + 1.0 }) + | -------------------- `Iterator::Item` remains `f64` here +note: required by a bound in `std::iter::Iterator::sum` + --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL + | +LL | S: Sum<Self::Item>, + | ^^^^^^^^^^^^^^^ required by this bound in `Iterator::sum` + +error[E0277]: a value of type `i32` cannot be made by summing an iterator over elements of type `()` + --> $DIR/invalid-iterator-chain.rs:30:54 + | +LL | println!("{}", vec![0, 1].iter().map(|x| { x; }).sum::<i32>()); + | ^^^ value of type `i32` cannot be made by summing a `std::iter::Iterator<Item=()>` + | + = help: the trait `Sum<()>` is not implemented for `i32` + = help: the following other types implement trait `Sum<A>`: + <i32 as Sum<&'a i32>> + <i32 as Sum> +note: the method call chain might not have had the expected associated types + --> $DIR/invalid-iterator-chain.rs:30:38 + | +LL | println!("{}", vec![0, 1].iter().map(|x| { x; }).sum::<i32>()); + | ---------- ------ ^^^^^^^^^^^^^^^ `Iterator::Item` changed to `()` here + | | | + | | `Iterator::Item` is `&{integer}` here + | this expression has type `Vec<{integer}>` +note: required by a bound in `std::iter::Iterator::sum` + --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL + | +LL | S: Sum<Self::Item>, + | ^^^^^^^^^^^^^^^ required by this bound in `Iterator::sum` + +error[E0277]: a value of type `i32` cannot be made by summing an iterator over elements of type `&()` + --> $DIR/invalid-iterator-chain.rs:31:40 + | +LL | println!("{}", vec![(), ()].iter().sum::<i32>()); + | ^^^ value of type `i32` cannot be made by summing a `std::iter::Iterator<Item=&()>` + | + = help: the trait `Sum<&()>` is not implemented for `i32` + = help: the following other types implement trait `Sum<A>`: + <i32 as Sum<&'a i32>> + <i32 as Sum> +note: the method call chain might not have had the expected associated types + --> $DIR/invalid-iterator-chain.rs:31:33 + | +LL | println!("{}", vec![(), ()].iter().sum::<i32>()); + | ------------ ^^^^^^ `Iterator::Item` is `&()` here + | | + | this expression has type `Vec<()>` +note: required by a bound in `std::iter::Iterator::sum` + --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL + | +LL | S: Sum<Self::Item>, + | ^^^^^^^^^^^^^^^ required by this bound in `Iterator::sum` + +error[E0277]: a value of type `Vec<i32>` cannot be built from an iterator over elements of type `()` + --> $DIR/invalid-iterator-chain.rs:40:25 + | +LL | let g: Vec<i32> = f.collect(); + | ^^^^^^^ value of type `Vec<i32>` cannot be built from `std::iter::Iterator<Item=()>` + | + = help: the trait `FromIterator<()>` is not implemented for `Vec<i32>` + = help: the trait `FromIterator<T>` is implemented for `Vec<T>` +note: the method call chain might not have had the expected associated types + --> $DIR/invalid-iterator-chain.rs:36:15 + | +LL | let a = vec![0]; + | ------- this expression has type `Vec<{integer}>` +LL | let b = a.into_iter(); + | ----------- `Iterator::Item` is `{integer}` here +LL | let c = b.map(|x| x + 1); + | -------------- `Iterator::Item` remains `{integer}` here +LL | let d = c.filter(|x| *x > 10 ); + | -------------------- `Iterator::Item` remains `{integer}` here +LL | let e = d.map(|x| { + | _______________^ +LL | | x + 1; +LL | | }); + | |______^ `Iterator::Item` changed to `()` here +LL | let f = e.filter(|_| false); + | ----------------- `Iterator::Item` remains `()` here +note: required by a bound in `collect` + --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL + | +LL | fn collect<B: FromIterator<Self::Item>>(self) -> B + | ^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Iterator::collect` + +error: aborting due to 6 previous errors + +For more information about this error, try `rustc --explain E0277`. diff --git a/src/test/ui/lazy-type-alias-impl-trait/branches.stderr b/src/test/ui/lazy-type-alias-impl-trait/branches.stderr index 5a46027dd52..c66069c4d25 100644 --- a/src/test/ui/lazy-type-alias-impl-trait/branches.stderr +++ b/src/test/ui/lazy-type-alias-impl-trait/branches.stderr @@ -1,10 +1,8 @@ error[E0277]: a value of type `Bar` cannot be built from an iterator over elements of type `_` - --> $DIR/branches.rs:19:9 + --> $DIR/branches.rs:19:28 | LL | std::iter::empty().collect() - | ^^^^^^^^^^^^^^^^^^ ------- required by a bound introduced by this call - | | - | value of type `Bar` cannot be built from `std::iter::Iterator<Item=_>` + | ^^^^^^^ value of type `Bar` cannot be built from `std::iter::Iterator<Item=_>` | = help: the trait `FromIterator<_>` is not implemented for `Bar` note: required by a bound in `collect` diff --git a/src/test/ui/lazy-type-alias-impl-trait/recursion4.stderr b/src/test/ui/lazy-type-alias-impl-trait/recursion4.stderr index a4b4968b7d2..a92c3a6809e 100644 --- a/src/test/ui/lazy-type-alias-impl-trait/recursion4.stderr +++ b/src/test/ui/lazy-type-alias-impl-trait/recursion4.stderr @@ -1,10 +1,8 @@ error[E0277]: a value of type `Foo` cannot be built from an iterator over elements of type `_` - --> $DIR/recursion4.rs:10:9 + --> $DIR/recursion4.rs:10:28 | LL | x = std::iter::empty().collect(); - | ^^^^^^^^^^^^^^^^^^ ------- required by a bound introduced by this call - | | - | value of type `Foo` cannot be built from `std::iter::Iterator<Item=_>` + | ^^^^^^^ value of type `Foo` cannot be built from `std::iter::Iterator<Item=_>` | = help: the trait `FromIterator<_>` is not implemented for `Foo` note: required by a bound in `collect` @@ -14,12 +12,10 @@ LL | fn collect<B: FromIterator<Self::Item>>(self) -> B | ^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Iterator::collect` error[E0277]: a value of type `impl Debug` cannot be built from an iterator over elements of type `_` - --> $DIR/recursion4.rs:19:9 + --> $DIR/recursion4.rs:19:28 | LL | x = std::iter::empty().collect(); - | ^^^^^^^^^^^^^^^^^^ ------- required by a bound introduced by this call - | | - | value of type `impl Debug` cannot be built from `std::iter::Iterator<Item=_>` + | ^^^^^^^ value of type `impl Debug` cannot be built from `std::iter::Iterator<Item=_>` | = help: the trait `FromIterator<_>` is not implemented for `impl Debug` note: required by a bound in `collect` diff --git a/src/test/ui/mismatched_types/method-help-unsatisfied-bound.stderr b/src/test/ui/mismatched_types/method-help-unsatisfied-bound.stderr index 36748fae13c..c2515c40b1d 100644 --- a/src/test/ui/mismatched_types/method-help-unsatisfied-bound.stderr +++ b/src/test/ui/mismatched_types/method-help-unsatisfied-bound.stderr @@ -1,10 +1,8 @@ error[E0277]: `Foo` doesn't implement `Debug` - --> $DIR/method-help-unsatisfied-bound.rs:5:5 + --> $DIR/method-help-unsatisfied-bound.rs:5:7 | LL | a.unwrap(); - | ^ ------ required by a bound introduced by this call - | | - | `Foo` cannot be formatted using `{:?}` + | ^^^^^^ `Foo` cannot be formatted using `{:?}` | = help: the trait `Debug` is not implemented for `Foo` = note: add `#[derive(Debug)]` to `Foo` or manually `impl Debug for Foo` diff --git a/src/test/ui/never_type/feature-gate-never_type_fallback.stderr b/src/test/ui/never_type/feature-gate-never_type_fallback.stderr index 6dc039fc35d..2db1cc4b776 100644 --- a/src/test/ui/never_type/feature-gate-never_type_fallback.stderr +++ b/src/test/ui/never_type/feature-gate-never_type_fallback.stderr @@ -5,7 +5,7 @@ LL | foo(panic!()) | --- ^^^^^^^^ | | | | | the trait `T` is not implemented for `()` - | | this tail expression is of type `_` + | | this tail expression is of type `()` | required by a bound introduced by this call | note: required by a bound in `foo` diff --git a/src/test/ui/not-clone-closure.stderr b/src/test/ui/not-clone-closure.stderr index f61ee661bb7..37d94cf0ebd 100644 --- a/src/test/ui/not-clone-closure.stderr +++ b/src/test/ui/not-clone-closure.stderr @@ -1,13 +1,11 @@ error[E0277]: the trait bound `S: Clone` is not satisfied in `[closure@$DIR/not-clone-closure.rs:7:17: 7:24]` - --> $DIR/not-clone-closure.rs:11:17 + --> $DIR/not-clone-closure.rs:11:23 | LL | let hello = move || { | ------- within this `[closure@$DIR/not-clone-closure.rs:7:17: 7:24]` ... LL | let hello = hello.clone(); - | ^^^^^ ----- required by a bound introduced by this call - | | - | within `[closure@$DIR/not-clone-closure.rs:7:17: 7:24]`, the trait `Clone` is not implemented for `S` + | ^^^^^ within `[closure@$DIR/not-clone-closure.rs:7:17: 7:24]`, the trait `Clone` is not implemented for `S` | note: required because it's used within this closure --> $DIR/not-clone-closure.rs:7:17 diff --git a/src/test/ui/on-unimplemented/sum.stderr b/src/test/ui/on-unimplemented/sum.stderr index c3103671178..70706541ad6 100644 --- a/src/test/ui/on-unimplemented/sum.stderr +++ b/src/test/ui/on-unimplemented/sum.stderr @@ -1,15 +1,20 @@ error[E0277]: a value of type `i32` cannot be made by summing an iterator over elements of type `&()` - --> $DIR/sum.rs:4:5 + --> $DIR/sum.rs:4:25 | LL | vec![(), ()].iter().sum::<i32>(); - | ^^^^^^^^^^^^^^^^^^^ --- required by a bound introduced by this call - | | - | value of type `i32` cannot be made by summing a `std::iter::Iterator<Item=&()>` + | ^^^ value of type `i32` cannot be made by summing a `std::iter::Iterator<Item=&()>` | = help: the trait `Sum<&()>` is not implemented for `i32` = help: the following other types implement trait `Sum<A>`: <i32 as Sum<&'a i32>> <i32 as Sum> +note: the method call chain might not have had the expected associated types + --> $DIR/sum.rs:4:18 + | +LL | vec![(), ()].iter().sum::<i32>(); + | ------------ ^^^^^^ `Iterator::Item` is `&()` here + | | + | this expression has type `Vec<()>` note: required by a bound in `std::iter::Iterator::sum` --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL | @@ -17,17 +22,22 @@ LL | S: Sum<Self::Item>, | ^^^^^^^^^^^^^^^ required by this bound in `Iterator::sum` error[E0277]: a value of type `i32` cannot be made by multiplying all elements of type `&()` from an iterator - --> $DIR/sum.rs:7:5 + --> $DIR/sum.rs:7:25 | LL | vec![(), ()].iter().product::<i32>(); - | ^^^^^^^^^^^^^^^^^^^ ------- required by a bound introduced by this call - | | - | value of type `i32` cannot be made by multiplying all elements from a `std::iter::Iterator<Item=&()>` + | ^^^^^^^ value of type `i32` cannot be made by multiplying all elements from a `std::iter::Iterator<Item=&()>` | = help: the trait `Product<&()>` is not implemented for `i32` = help: the following other types implement trait `Product<A>`: <i32 as Product<&'a i32>> <i32 as Product> +note: the method call chain might not have had the expected associated types + --> $DIR/sum.rs:7:18 + | +LL | vec![(), ()].iter().product::<i32>(); + | ------------ ^^^^^^ `Iterator::Item` is `&()` here + | | + | this expression has type `Vec<()>` note: required by a bound in `std::iter::Iterator::product` --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL | diff --git a/src/test/ui/rfc-2632-const-trait-impl/const-default-method-bodies.stderr b/src/test/ui/rfc-2632-const-trait-impl/const-default-method-bodies.stderr index c64930db9be..f9d0d1f7875 100644 --- a/src/test/ui/rfc-2632-const-trait-impl/const-default-method-bodies.stderr +++ b/src/test/ui/rfc-2632-const-trait-impl/const-default-method-bodies.stderr @@ -1,10 +1,8 @@ error[E0277]: the trait bound `NonConstImpl: ~const ConstDefaultFn` is not satisfied - --> $DIR/const-default-method-bodies.rs:24:5 + --> $DIR/const-default-method-bodies.rs:24:18 | LL | NonConstImpl.a(); - | ^^^^^^^^^^^^ - required by a bound introduced by this call - | | - | the trait `~const ConstDefaultFn` is not implemented for `NonConstImpl` + | ^ the trait `~const ConstDefaultFn` is not implemented for `NonConstImpl` | note: the trait `ConstDefaultFn` is implemented for `NonConstImpl`, but that implementation is not `const` --> $DIR/const-default-method-bodies.rs:24:5 diff --git a/src/test/ui/rfc-2632-const-trait-impl/cross-crate.gatednc.stderr b/src/test/ui/rfc-2632-const-trait-impl/cross-crate.gatednc.stderr index 925ae53e324..633b7cc255a 100644 --- a/src/test/ui/rfc-2632-const-trait-impl/cross-crate.gatednc.stderr +++ b/src/test/ui/rfc-2632-const-trait-impl/cross-crate.gatednc.stderr @@ -1,10 +1,8 @@ error[E0277]: the trait bound `cross_crate::NonConst: ~const cross_crate::MyTrait` is not satisfied - --> $DIR/cross-crate.rs:17:5 + --> $DIR/cross-crate.rs:17:14 | LL | NonConst.func(); - | ^^^^^^^^ ---- required by a bound introduced by this call - | | - | the trait `~const cross_crate::MyTrait` is not implemented for `cross_crate::NonConst` + | ^^^^ the trait `~const cross_crate::MyTrait` is not implemented for `cross_crate::NonConst` | note: the trait `cross_crate::MyTrait` is implemented for `cross_crate::NonConst`, but that implementation is not `const` --> $DIR/cross-crate.rs:17:5 diff --git a/src/test/ui/rfc-2632-const-trait-impl/cross-crate.stocknc.stderr b/src/test/ui/rfc-2632-const-trait-impl/cross-crate.stocknc.stderr index 11db0c2b8f2..9e97d3f1137 100644 --- a/src/test/ui/rfc-2632-const-trait-impl/cross-crate.stocknc.stderr +++ b/src/test/ui/rfc-2632-const-trait-impl/cross-crate.stocknc.stderr @@ -1,10 +1,8 @@ error[E0277]: the trait bound `cross_crate::NonConst: cross_crate::MyTrait` is not satisfied - --> $DIR/cross-crate.rs:17:5 + --> $DIR/cross-crate.rs:17:14 | LL | NonConst.func(); - | ^^^^^^^^ ---- required by a bound introduced by this call - | | - | the trait `~const cross_crate::MyTrait` is not implemented for `cross_crate::NonConst` + | ^^^^ the trait `~const cross_crate::MyTrait` is not implemented for `cross_crate::NonConst` | note: the trait `cross_crate::MyTrait` is implemented for `cross_crate::NonConst`, but that implementation is not `const` --> $DIR/cross-crate.rs:17:5 diff --git a/src/test/ui/rfc-2632-const-trait-impl/default-method-body-is-const-same-trait-ck.stderr b/src/test/ui/rfc-2632-const-trait-impl/default-method-body-is-const-same-trait-ck.stderr index c2c16921c2e..21ecddaffbb 100644 --- a/src/test/ui/rfc-2632-const-trait-impl/default-method-body-is-const-same-trait-ck.stderr +++ b/src/test/ui/rfc-2632-const-trait-impl/default-method-body-is-const-same-trait-ck.stderr @@ -1,10 +1,8 @@ error[E0277]: the trait bound `(): ~const Tr` is not satisfied - --> $DIR/default-method-body-is-const-same-trait-ck.rs:8:9 + --> $DIR/default-method-body-is-const-same-trait-ck.rs:8:12 | LL | ().a() - | ^^ - required by a bound introduced by this call - | | - | the trait `~const Tr` is not implemented for `()` + | ^ the trait `~const Tr` is not implemented for `()` | note: the trait `Tr` is implemented for `()`, but that implementation is not `const` --> $DIR/default-method-body-is-const-same-trait-ck.rs:8:9 diff --git a/src/test/ui/rfc-2632-const-trait-impl/super-traits-fail-2.yn.stderr b/src/test/ui/rfc-2632-const-trait-impl/super-traits-fail-2.yn.stderr index b52eb2c0332..13fc719f28c 100644 --- a/src/test/ui/rfc-2632-const-trait-impl/super-traits-fail-2.yn.stderr +++ b/src/test/ui/rfc-2632-const-trait-impl/super-traits-fail-2.yn.stderr @@ -1,10 +1,8 @@ error[E0277]: the trait bound `T: ~const Foo` is not satisfied - --> $DIR/super-traits-fail-2.rs:15:5 + --> $DIR/super-traits-fail-2.rs:15:7 | LL | x.a(); - | ^ - required by a bound introduced by this call - | | - | the trait `~const Foo` is not implemented for `T` + | ^ the trait `~const Foo` is not implemented for `T` | note: the trait `Foo` is implemented for `T`, but that implementation is not `const` --> $DIR/super-traits-fail-2.rs:15:5 diff --git a/src/test/ui/rfc-2632-const-trait-impl/super-traits-fail-2.yy.stderr b/src/test/ui/rfc-2632-const-trait-impl/super-traits-fail-2.yy.stderr index b52eb2c0332..13fc719f28c 100644 --- a/src/test/ui/rfc-2632-const-trait-impl/super-traits-fail-2.yy.stderr +++ b/src/test/ui/rfc-2632-const-trait-impl/super-traits-fail-2.yy.stderr @@ -1,10 +1,8 @@ error[E0277]: the trait bound `T: ~const Foo` is not satisfied - --> $DIR/super-traits-fail-2.rs:15:5 + --> $DIR/super-traits-fail-2.rs:15:7 | LL | x.a(); - | ^ - required by a bound introduced by this call - | | - | the trait `~const Foo` is not implemented for `T` + | ^ the trait `~const Foo` is not implemented for `T` | note: the trait `Foo` is implemented for `T`, but that implementation is not `const` --> $DIR/super-traits-fail-2.rs:15:5 diff --git a/src/test/ui/suggestions/issue-71394-no-from-impl.stderr b/src/test/ui/suggestions/issue-71394-no-from-impl.stderr index 684db23e135..a5e6f5b5ffc 100644 --- a/src/test/ui/suggestions/issue-71394-no-from-impl.stderr +++ b/src/test/ui/suggestions/issue-71394-no-from-impl.stderr @@ -1,10 +1,8 @@ error[E0277]: the trait bound `&[i8]: From<&[u8]>` is not satisfied - --> $DIR/issue-71394-no-from-impl.rs:3:20 + --> $DIR/issue-71394-no-from-impl.rs:3:25 | LL | let _: &[i8] = data.into(); - | ^^^^ ---- required by a bound introduced by this call - | | - | the trait `From<&[u8]>` is not implemented for `&[i8]` + | ^^^^ the trait `From<&[u8]>` is not implemented for `&[i8]` | = help: the following other types implement trait `From<T>`: <[T; LANES] as From<Simd<T, LANES>>> diff --git a/src/test/ui/traits/issue-97576.stderr b/src/test/ui/traits/issue-97576.stderr index 146d38d076a..9062a0fab63 100644 --- a/src/test/ui/traits/issue-97576.stderr +++ b/src/test/ui/traits/issue-97576.stderr @@ -1,10 +1,8 @@ error[E0277]: the trait bound `String: From<impl ToString>` is not satisfied - --> $DIR/issue-97576.rs:8:18 + --> $DIR/issue-97576.rs:8:22 | LL | bar: bar.into(), - | ^^^ ---- required by a bound introduced by this call - | | - | the trait `From<impl ToString>` is not implemented for `String` + | ^^^^ the trait `From<impl ToString>` is not implemented for `String` | = note: required for `impl ToString` to implement `Into<String>` diff --git a/src/test/ui/unsized/issue-71659.stderr b/src/test/ui/unsized/issue-71659.stderr index 50060e53a49..d7b95f55769 100644 --- a/src/test/ui/unsized/issue-71659.stderr +++ b/src/test/ui/unsized/issue-71659.stderr @@ -1,10 +1,8 @@ error[E0277]: the trait bound `dyn Foo: CastTo<[i32]>` is not satisfied - --> $DIR/issue-71659.rs:30:13 + --> $DIR/issue-71659.rs:30:15 | LL | let x = x.cast::<[i32]>(); - | ^ ---- required by a bound introduced by this call - | | - | the trait `CastTo<[i32]>` is not implemented for `dyn Foo` + | ^^^^ the trait `CastTo<[i32]>` is not implemented for `dyn Foo` | note: required by a bound in `Cast::cast` --> $DIR/issue-71659.rs:19:15 |