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error: trait objects without an explicit `dyn` are deprecated
--> $DIR/dyn-angle-brackets.rs:15:10
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LL | <fmt::Debug>::fmt(self, f)
| ^^^^^^^^^^
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note: the lint level is defined here
--> $DIR/dyn-angle-brackets.rs:4:9
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LL | #![deny(bare_trait_objects)]
| ^^^^^^^^^^^^^^^^^^
= warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: use `dyn`
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LL | <dyn fmt::Debug>::fmt(self, f)
| +++
error: aborting due to previous error
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