error: attribute value must be a literal --> $DIR/issue-90878-2.rs:1:7 | LL | #![l=|x|[b;x ]] | ^^^^^^^^^ error: cannot find attribute `l` in this scope --> $DIR/issue-90878-2.rs:1:5 | LL | #![l=|x|[b;x ]] | ^ error: aborting due to 2 previous errors