1 error[E0277]: a value of type `Foo` cannot be built from an iterator over elements of type `_`
2 --> $DIR/recursion4.rs:10:28
4 LL | x = std::iter::empty().collect();
5 | ^^^^^^^ value of type `Foo` cannot be built from `std::iter::Iterator<Item=_>`
7 = help: the trait `FromIterator<_>` is not implemented for `Foo`
8 note: required by a bound in `collect`
9 --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
11 error[E0277]: a value of type `impl Debug` cannot be built from an iterator over elements of type `_`
12 --> $DIR/recursion4.rs:19:28
14 LL | x = std::iter::empty().collect();
15 | ^^^^^^^ value of type `impl Debug` cannot be built from `std::iter::Iterator<Item=_>`
17 = help: the trait `FromIterator<_>` is not implemented for `impl Debug`
18 note: required by a bound in `collect`
19 --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
21 error: aborting due to 2 previous errors
23 For more information about this error, try `rustc --explain E0277`.