bench-flumelog.patch

--- node_modules/bench-flumelog/index.js~	1985-10-26 09:15:00.000000000 +0100
+++ node_modules/bench-flumelog/index.js	2020-09-22 00:28:03.493468776 +0200
@@ -65,8 +65,10 @@
       }, function (err) {
         if(err && err != true) throw err
         var time = (Date.now() - start)/1000
-        print('append', c/time, (total/MB)/time, c, total/MB, time)
-        next2()
+        log.onDrain(() => {
+          print('append', c/time, (total/MB)/time, c, total/MB, time)
+          next2()
+        })
       })
     )
   }