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error: return types are denoted using `->`
--> $DIR/avoid-ice-on-warning.rs:4:23
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LL | fn call_this<F>(f: F) : Fn(&str) + call_that {}
| ^
|
help: use `->` instead
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LL - fn call_this<F>(f: F) : Fn(&str) + call_that {}
LL + fn call_this<F>(f: F) -> Fn(&str) + call_that {}
|
error[E0405]: cannot find trait `call_that` in this scope
--> $DIR/avoid-ice-on-warning.rs:4:36
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LL | fn call_this<F>(f: F) : Fn(&str) + call_that {}
| ^^^^^^^^^ not found in this scope
warning: trait objects without an explicit `dyn` are deprecated
--> $DIR/avoid-ice-on-warning.rs:4:25
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LL | fn call_this<F>(f: F) : Fn(&str) + call_that {}
| ^^^^^^^^^^^^^^^^^^^^
|
= warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
= note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
= note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
help: if this is a dyn-compatible trait, use `dyn`
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LL | fn call_this<F>(f: F) : dyn Fn(&str) + call_that {}
| +++
error: aborting due to 2 previous errors; 1 warning emitted
For more information about this error, try `rustc --explain E0405`.
|
