Fix tracing build.

src/parser/greater_block.rs

@@ -93,7 +93,6 @@ fn quote_block<'b, 'g, 'r, 's>(
     ))
 }
 
-#[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
 fn special_block<'s>(
     name: &'s str,
 ) -> impl for<'b, 'g, 'r> Fn(

src/parser/planning.rs

@@ -63,6 +63,7 @@ pub(crate) fn planning<'b, 'g, 'r, 's>(
     ))
 }
 
+#[derive(Debug)]
 enum PlanningTimestampType {
     Scheduled,
     Deadline,