1error[E0277]: the trait bound `Option<Vec<u8>>: MyFromIterator<&u8>` is not satisfied 2 --> $DIR/on-trait.rs:28:30 3 | 4LL | let y: Option<Vec<u8>> = collect(x.iter()); // this should give approximately the same error for x.iter().collect() 5 | ^^^^^^^ a collection of type `Option<Vec<u8>>` cannot be built from an iterator over elements of type `&u8` 6 | 7 = help: the trait `MyFromIterator<&u8>` is not implemented for `Option<Vec<u8>>` 8note: required by a bound in `collect` 9 --> $DIR/on-trait.rs:22:39 10 | 11LL | fn collect<A, I: Iterator<Item=A>, B: MyFromIterator<A>>(it: I) -> B { 12 | ^^^^^^^^^^^^^^^^^ required by this bound in `collect` 13 14error[E0277]: the trait bound `String: Foo<u8, _, u32>` is not satisfied 15 --> $DIR/on-trait.rs:31:21 16 | 17LL | let x: String = foobar(); 18 | ^^^^^^ test error `String` with `u8` `_` `u32` in `Foo` 19 | 20 = help: the trait `Foo<u8, _, u32>` is not implemented for `String` 21note: required by a bound in `foobar` 22 --> $DIR/on-trait.rs:12:24 23 | 24LL | fn foobar<U: Clone, T: Foo<u8, U, u32>>() -> T { 25 | ^^^^^^^^^^^^^^^ required by this bound in `foobar` 26 27error: aborting due to 2 previous errors 28 29For more information about this error, try `rustc --explain E0277`. 30