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error: trait objects without an explicit `dyn` are deprecated
--> tests/ui/bare-trait-object.rs:11:16
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11 | impl Trait for Send + Sync {
| ^^^^^^^^^^^
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= 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>
note: the lint level is defined here
--> tests/ui/bare-trait-object.rs:1:9
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1 | #![deny(bare_trait_objects)]
| ^^^^^^^^^^^^^^^^^^
help: use `dyn`
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11 | impl Trait for dyn Send + Sync {
| +++
help: alternatively use a blanket implementation to implement `Trait` for all types that also implement `Send + Sync`
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11 | impl<T: Send + Sync> Trait for T {
| ++++++++++++++++ ~
|
