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error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> $DIR/ice-6251.rs:4:45
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LL | fn bug<T>() -> impl Iterator<Item = [(); { |x: [u8]| x }]> {
| ^ doesn't have a size known at compile-time
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= help: the trait `std::marker::Sized` is not implemented for `[u8]`
= help: unsized fn params are gated as an unstable feature
help: function arguments must have a statically known size, borrowed types always have a known size
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LL | fn bug<T>() -> impl Iterator<Item = [(); { |x: &[u8]| x }]> {
| +
error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> $DIR/ice-6251.rs:4:54
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LL | fn bug<T>() -> impl Iterator<Item = [(); { |x: [u8]| x }]> {
| ^ doesn't have a size known at compile-time
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= help: the trait `std::marker::Sized` is not implemented for `[u8]`
= note: the return type of a function must have a statically known size
error[E0308]: mismatched types
--> $DIR/ice-6251.rs:4:44
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LL | fn bug<T>() -> impl Iterator<Item = [(); { |x: [u8]| x }]> {
| ^^^^^^^^^^^ expected `usize`, found closure
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= note: expected type `usize`
found closure `{closure@$DIR/ice-6251.rs:4:44: 4:53}`
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0277, E0308.
For more information about an error, try `rustc --explain E0277`.
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