优化task代码细节

macro/src/task.rs

@@ -44,7 +44,7 @@ impl Parse for TaskArgs {
                     "interval" => {
                         if let Expr::Lit(ExprLit{ lit, .. }) = meta.value {
                             if let Lit::Int(value) = lit {
-                                task_args.interval = value.base10_parse().unwrap();
+                                task_args.interval = value.base10_parse()?;
                             }
                         }
                     }