mirror of https://github.com/rust-lang/rust.git
61 lines
2.7 KiB
Plaintext
61 lines
2.7 KiB
Plaintext
error[E0637]: `'_` cannot be used here
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--> $DIR/normalizing_with_unconstrained_impl_params.rs:9:32
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LL | struct ConstChunksExact<'a, T: '_, const assert: usize> {}
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| ^^ `'_` is a reserved lifetime name
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error[E0308]: mismatched types
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--> $DIR/normalizing_with_unconstrained_impl_params.rs:13:83
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LL | impl<'a, T: std::fmt::Debug, const N: usize> Iterator for ConstChunksExact<'a, T, {}> {
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| ^^ expected `usize`, found `()`
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error[E0046]: not all trait items implemented, missing: `Item`
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--> $DIR/normalizing_with_unconstrained_impl_params.rs:4:1
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LL | impl<'a, T: std::fmt::Debug, const N: usize> Iterator for ConstChunksExact<'a, T, { N }> {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `Item` in implementation
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= help: implement the missing item: `type Item = /* Type */;`
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error[E0392]: lifetime parameter `'a` is never used
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--> $DIR/normalizing_with_unconstrained_impl_params.rs:9:25
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LL | struct ConstChunksExact<'a, T: '_, const assert: usize> {}
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| ^^ unused lifetime parameter
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= help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData`
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error[E0392]: type parameter `T` is never used
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--> $DIR/normalizing_with_unconstrained_impl_params.rs:9:29
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LL | struct ConstChunksExact<'a, T: '_, const assert: usize> {}
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| ^ unused type parameter
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= help: consider removing `T`, referring to it in a field, or using a marker such as `PhantomData`
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error[E0207]: the const parameter `N` is not constrained by the impl trait, self type, or predicates
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--> $DIR/normalizing_with_unconstrained_impl_params.rs:13:30
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LL | impl<'a, T: std::fmt::Debug, const N: usize> Iterator for ConstChunksExact<'a, T, {}> {
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| ^^^^^^^^^^^^^^ unconstrained const parameter
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= note: expressions using a const parameter must map each value to a distinct output value
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= note: proving the result of expressions other than the parameter are unique is not supported
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error[E0308]: mismatched types
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--> $DIR/normalizing_with_unconstrained_impl_params.rs:6:27
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LL | fn next(&mut self) -> Option<Self::Item> {}
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| ---- ^^^^^^^^^^^^^^^^^^ expected `Option<_>`, found `()`
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| |
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| implicitly returns `()` as its body has no tail or `return` expression
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= note: expected enum `Option<_>`
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found unit type `()`
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error: aborting due to 7 previous errors
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Some errors have detailed explanations: E0046, E0207, E0308, E0392, E0637.
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For more information about an error, try `rustc --explain E0046`.
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