mirror of https://github.com/rust-lang/rust
37 lines
1.7 KiB
Plaintext
37 lines
1.7 KiB
Plaintext
error[E0107]: missing generics for associated type `MapLike::VRefCont`
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--> $DIR/issue-79422.rs:47:36
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LL | as Box<dyn MapLike<u8, u8, VRefCont = dyn RefCont<'_, u8>>>;
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| ^^^^^^^^ expected 1 lifetime argument
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note: associated type defined here, with 1 lifetime parameter: `'a`
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--> $DIR/issue-79422.rs:23:10
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LL | type VRefCont<'a>: RefCont<'a, V> where Self: 'a;
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| ^^^^^^^^ --
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help: add missing lifetime argument
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LL | as Box<dyn MapLike<u8, u8, VRefCont<'a> = dyn RefCont<'_, u8>>>;
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| ++++
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error[E0271]: type mismatch resolving `<BTreeMap<u8, u8> as MapLike<u8, u8>>::VRefCont<'_> == dyn RefCont<'_, u8>`
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--> $DIR/issue-79422.rs:44:13
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LL | let m = Box::new(std::collections::BTreeMap::<u8, u8>::new())
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch resolving `<BTreeMap<u8, u8> as MapLike<u8, u8>>::VRefCont<'_> == dyn RefCont<'_, u8>`
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note: expected this to be `(dyn RefCont<'_, u8> + 'static)`
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--> $DIR/issue-79422.rs:28:25
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LL | type VRefCont<'a> = &'a V where Self: 'a;
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| ^^^^^
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= note: expected trait object `(dyn RefCont<'_, u8> + 'static)`
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found reference `&u8`
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= help: `&u8` implements `RefCont` so you could box the found value and coerce it to the trait object `Box<dyn RefCont>`, you will have to change the expected type as well
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= note: required for the cast from `Box<BTreeMap<u8, u8>>` to `Box<dyn MapLike<u8, u8, VRefCont = (dyn RefCont<'_, u8> + 'static)>>`
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error: aborting due to 2 previous errors
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Some errors have detailed explanations: E0107, E0271.
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For more information about an error, try `rustc --explain E0107`.
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