30 lines
1.3 KiB
Plaintext
30 lines
1.3 KiB
Plaintext
error: return types are denoted using `->`
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--> $DIR/avoid-ice-on-warning.rs:1:23
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LL | fn call_this<F>(f: F) : Fn(&str) + call_that {}
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| ^ help: use `->` instead
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error[E0405]: cannot find trait `call_that` in this scope
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--> $DIR/avoid-ice-on-warning.rs:1:36
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LL | fn call_this<F>(f: F) : Fn(&str) + call_that {}
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| ^^^^^^^^^ not found in this scope
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warning: trait objects without an explicit `dyn` are deprecated
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--> $DIR/avoid-ice-on-warning.rs:1:25
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LL | fn call_this<F>(f: F) : Fn(&str) + call_that {}
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| ^^^^^^^^^^^^^^^^^^^^
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= warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
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= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
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= note: `#[warn(bare_trait_objects)]` on by default
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help: `Fn(&str) + call_that` is not object safe, use `impl Fn(&str) + call_that` to return an opaque type, as long as you return a single underlying type
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LL | fn call_this<F>(f: F) : impl Fn(&str) + call_that {}
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| ++++
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error: aborting due to 2 previous errors; 1 warning emitted
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For more information about this error, try `rustc --explain E0405`.
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