b7fc1a7431
When a trait is not implemented for a type, but there *is* an `impl` for another type or different trait params, we format the output to use highlighting in the same way that E0308 does for types. The logic accounts for 3 cases: - When both the type and trait in the expected predicate and the candidate are different - When only the types are different - When only the trait generic params are different For each case, we use slightly different formatting and wording.
55 lines
1.9 KiB
Text
55 lines
1.9 KiB
Text
error[E0277]: the trait bound `Uwu<10, 12>: Trait` is not satisfied
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--> $DIR/rp_impl_trait_fail.rs:6:14
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LL | fn rawr() -> impl Trait {
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| ^^^^^^^^^^ the trait `Trait` is not implemented for `Uwu<10, 12>`
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LL |
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LL | Uwu::<10, 12>
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| ------------- return type was inferred to be `Uwu<10, 12>` here
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= help: the trait `Trait` is implemented for `Uwu<N>`
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error[E0277]: the trait bound `u32: Traitor<N>` is not satisfied
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--> $DIR/rp_impl_trait_fail.rs:16:26
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LL | fn uwu<const N: u8>() -> impl Traitor<N> {
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| ^^^^^^^^^^^^^^^ the trait `Traitor<N>` is not implemented for `u32`
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LL |
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LL | 1_u32
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| ----- return type was inferred to be `u32` here
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= help: the trait `Traitor<N, N>` is not implemented for `u32`
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but trait `Traitor<N, 2>` is implemented for it
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error[E0277]: the trait bound `u64: Traitor` is not satisfied
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--> $DIR/rp_impl_trait_fail.rs:21:13
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LL | fn owo() -> impl Traitor {
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| ^^^^^^^^^^^^ the trait `Traitor` is not implemented for `u64`
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LL |
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LL | 1_u64
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| ----- return type was inferred to be `u64` here
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= help: the trait `Traitor<1, 1>` is not implemented for `u64`
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but trait `Traitor<1, 2>` is implemented for it
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error[E0284]: type annotations needed
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--> $DIR/rp_impl_trait_fail.rs:28:5
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LL | uwu();
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| ^^^ cannot infer the value of the const parameter `N` declared on the function `uwu`
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note: required by a const generic parameter in `uwu`
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--> $DIR/rp_impl_trait_fail.rs:16:8
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LL | fn uwu<const N: u8>() -> impl Traitor<N> {
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| ^^^^^^^^^^^ required by this const generic parameter in `uwu`
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help: consider specifying the generic argument
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LL | uwu::<N>();
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| +++++
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error: aborting due to 4 previous errors
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Some errors have detailed explanations: E0277, E0284.
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For more information about an error, try `rustc --explain E0277`.
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