1 error: removing an expression is not supported in this position
2 --> $DIR/cfg-non-opt-expr.rs:5:13
4 LL | let _ = #[cfg(unset)] ();
7 error: removing an expression is not supported in this position
8 --> $DIR/cfg-non-opt-expr.rs:7:21
10 LL | let _ = 1 + 2 + #[cfg(unset)] 3;
13 error: removing an expression is not supported in this position
14 --> $DIR/cfg-non-opt-expr.rs:9:23
16 LL | let _ = [1, 2, 3][#[cfg(unset)] 1];
19 error: aborting due to 3 previous errors