From be27775a3c502a7a6fbf9b47b16788d5f26028c2 Mon Sep 17 00:00:00 2001
From: Adrien Delorme <adrien.delorme@icloud.com>
Date: Wed, 12 Sep 2018 17:04:10 -0700
Subject: [PATCH] start the pool only once

---
 packer/progressbar.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packer/progressbar.go b/packer/progressbar.go
index 072d6d142..a709f284a 100644
--- a/packer/progressbar.go
+++ b/packer/progressbar.go
@@ -44,9 +44,11 @@ func (spb *StackableProgressBar) New(identifier string) ProgressBar {
 	spb.wg.Add(1)
 	defer spb.mtx.Unlock()
 
+	start := false
 	if spb.pool == nil {
 		spb.pool = pb.NewPool()
 		go spb.cleanup()
+		start = true
 	}
 
 	bar := NewProgressBar(identifier)
@@ -55,7 +57,9 @@ func (spb *StackableProgressBar) New(identifier string) ProgressBar {
 	spb.bars = append(spb.bars, bar)
 
 	spb.pool.Add(bar.ProgressBar)
-	spb.pool.Start()
+	if start {
+		spb.pool.Start()
+	}
 	return bar
 }