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Future incompatibility report: Future breakage diagnostic:
warning: impl method assumes more implied bounds than the corresponding trait method
--> $DIR/resolve-re-error-ice.rs:17:16
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LL | fn key_set(&self) -> Subject<'a, Keys<K, V>, (), R> {
| ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace this type to make the impl signature compatible: `Subject<'_, std::collections::hash_map::Keys<'_, K, V>, (), R>`
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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!
= note: for more information, see issue #105572 <https://github.com/rust-lang/rust/issues/105572>
note: the lint level is defined here
--> $DIR/resolve-re-error-ice.rs:4:10
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LL | #![allow(implied_bounds_entailment)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
