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error[E0637]: `'_` cannot be used here
--> $DIR/normalizing_with_unconstrained_impl_params.rs:9:32
|
LL | struct ConstChunksExact<'a, T: '_, const assert: usize> {}
| ^^ `'_` is a reserved lifetime name
error[E0308]: mismatched types
--> $DIR/normalizing_with_unconstrained_impl_params.rs:13:83
|
LL | impl<'a, T: std::fmt::Debug, const N: usize> Iterator for ConstChunksExact<'a, T, {}> {
| ^^ expected `usize`, found `()`
error[E0046]: not all trait items implemented, missing: `Item`
--> $DIR/normalizing_with_unconstrained_impl_params.rs:4:1
|
LL | impl<'a, T: std::fmt::Debug, const N: usize> Iterator for ConstChunksExact<'a, T, { N }> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `Item` in implementation
|
= help: implement the missing item: `type Item = /* Type */;`
error[E0392]: lifetime parameter `'a` is never used
--> $DIR/normalizing_with_unconstrained_impl_params.rs:9:25
|
LL | struct ConstChunksExact<'a, T: '_, const assert: usize> {}
| ^^ unused lifetime parameter
|
= help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData`
error[E0392]: type parameter `T` is never used
--> $DIR/normalizing_with_unconstrained_impl_params.rs:9:29
|
LL | struct ConstChunksExact<'a, T: '_, const assert: usize> {}
| ^ unused type parameter
|
= help: consider removing `T`, referring to it in a field, or using a marker such as `PhantomData`
error[E0520]: `Item` specializes an item from a parent `impl`, but that item is not marked `default`
--> $DIR/normalizing_with_unconstrained_impl_params.rs:16:5
|
LL | impl<'a, T: std::fmt::Debug, const N: usize> Iterator for ConstChunksExact<'a, T, { N }> {
| ---------------------------------------------------------------------------------------- parent `impl` is here
...
LL | type Item = &'a [T; N]; }
| ^^^^^^^^^ cannot specialize default item `Item`
|
= note: to specialize, `Item` in the parent `impl` must be marked `default`
error[E0207]: the const parameter `N` is not constrained by the impl trait, self type, or predicates
--> $DIR/normalizing_with_unconstrained_impl_params.rs:13:30
|
LL | impl<'a, T: std::fmt::Debug, const N: usize> Iterator for ConstChunksExact<'a, T, {}> {
| ^^^^^^^^^^^^^^ unconstrained const parameter
|
= note: expressions using a const parameter must map each value to a distinct output value
= note: proving the result of expressions other than the parameter are unique is not supported
error[E0308]: mismatched types
--> $DIR/normalizing_with_unconstrained_impl_params.rs:6:27
|
LL | fn next(&mut self) -> Option<Self::Item> {}
| ---- ^^^^^^^^^^^^^^^^^^ expected `Option<_>`, found `()`
| |
| implicitly returns `()` as its body has no tail or `return` expression
|
= note: expected enum `Option<_>`
found unit type `()`
error: aborting due to 8 previous errors
Some errors have detailed explanations: E0046, E0207, E0308, E0392, E0520, E0637.
For more information about an error, try `rustc --explain E0046`.
|
