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warning: unused variable: `x`
--> $DIR/issue-89305.rs:13:13
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LL | let x: () = asm!("nop");
| ^ help: if this is intentional, prefix it with an underscore: `_x`
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note: the lint level is defined here
--> $DIR/issue-89305.rs:7:9
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LL | #![warn(unused)]
| ^^^^^^
= note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
warning: 1 warning emitted
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