error: attribute value must be a literal --> $DIR/unused-item-in-attr.rs:1:7 | LL | #[w = { extern crate alloc; }] | ^^^^^^^^^^^^^^^^^^^^^^^ error: cannot find attribute `w` in this scope --> $DIR/unused-item-in-attr.rs:1:3 | LL | #[w = { extern crate alloc; }] | ^ error: aborting due to 2 previous errors