mirror of https://github.com/rust-lang/rust
13 lines
681 B
Plaintext
13 lines
681 B
Plaintext
Future incompatibility report: Future breakage diagnostic:
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warning: to use a constant of type `Cow<'_, str>` in a pattern, `Cow<'_, str>` must be annotated with `#[derive(PartialEq)]`
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--> $DIR/issue-89088.rs:19:9
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LL | FOO => todo!(),
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| ^^^
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #120362 <https://github.com/rust-lang/rust/issues/120362>
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= note: the traits must be derived, manual `impl`s are not sufficient
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= note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details
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