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error[E0562]: `impl Trait` is not allowed in the type of variable bindings
--> $DIR/issue-54600.rs:4:19
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LL | let x: Option<impl Debug> = Some(44_u32);
| ^^^^^^^^^^
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= note: `impl Trait` is only allowed in arguments and return types of functions and methods
= note: see issue #63065 <https://github.com/rust-lang/rust/issues/63065> for more information
= help: add `#![feature(impl_trait_in_bindings)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0562`.
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