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error: expected identifier, found `1`
--> $DIR/issue-79099.rs:3:65
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LL | let f: impl core::future::Future<Output = u8> = async { 1 };
| ----- ^ expected identifier
| |
| `async` blocks are only allowed in Rust 2018 or later
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= help: pass `--edition 2021` to `rustc`
= note: for more on editions, read https://doc.rust-lang.org/edition-guide
error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in variable binding
--> $DIR/issue-79099.rs:3:16
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LL | let f: impl core::future::Future<Output = u8> = async { 1 };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0562`.
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