error: suffixed literals are not allowed in attributes --> $DIR/malformed-interpolated.rs:12:8 | LL | check!(0u8); | ^^^ | = help: instead of using a suffixed literal (`1u8`, `1.0f32`, etc.), use an unsuffixed version (`1`, `1.0`, etc.) error: attribute value must be a literal --> $DIR/malformed-interpolated.rs:13:8 | LL | check!(-0); | ^^ error: attribute value must be a literal --> $DIR/malformed-interpolated.rs:14:8 | LL | check!(0 + 0); | ^^^^^ error: aborting due to 3 previous errors