47 lines
1.8 KiB
Plaintext
47 lines
1.8 KiB
Plaintext
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error[E0308]: mismatched types
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--> $DIR/fn-trait-formatting.rs:16:17
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LL | let _: () = (box |_: isize| {}) as Box<FnOnce(isize)>;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected (), found struct `std::boxed::Box`
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= note: expected type `()`
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found type `std::boxed::Box<dyn std::ops::FnOnce(isize)>`
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error[E0308]: mismatched types
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--> $DIR/fn-trait-formatting.rs:20:17
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LL | let _: () = (box |_: isize, isize| {}) as Box<Fn(isize, isize)>;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected (), found struct `std::boxed::Box`
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= note: expected type `()`
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found type `std::boxed::Box<dyn std::ops::Fn(isize, isize)>`
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error[E0308]: mismatched types
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--> $DIR/fn-trait-formatting.rs:24:17
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LL | let _: () = (box || -> isize { unimplemented!() }) as Box<FnMut() -> isize>;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected (), found struct `std::boxed::Box`
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= note: expected type `()`
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found type `std::boxed::Box<dyn std::ops::FnMut() -> isize>`
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error[E0277]: the trait bound `{integer}: std::ops::Fn<(isize,)>` is not satisfied
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--> $DIR/fn-trait-formatting.rs:29:5
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LL | needs_fn(1);
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| ^^^^^^^^ the trait `std::ops::Fn<(isize,)>` is not implemented for `{integer}`
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= help: the following implementations were found:
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<&'a F as std::ops::Fn<A>>
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<core::str::LinesAnyMap as std::ops::Fn<(&'a str,)>>
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note: required by `needs_fn`
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--> $DIR/fn-trait-formatting.rs:13:1
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LL | fn needs_fn<F>(x: F) where F: Fn(isize) -> isize {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: aborting due to 4 previous errors
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Some errors occurred: E0277, E0308.
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For more information about an error, try `rustc --explain E0277`.
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