From a6a6e1632915d366fadebf48d045c5c253b02b68 Mon Sep 17 00:00:00 2001
From: Evan Hazlett <ejhazlett@gmail.com>
Date: Mon, 15 Jun 2015 17:04:46 -0400
Subject: [PATCH] vbox: fix vbox race with unregistervm

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
---
 drivers/virtualbox/virtualbox.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/virtualbox/virtualbox.go b/drivers/virtualbox/virtualbox.go
index c4b3e2dbe6..0b12303c1a 100644
--- a/drivers/virtualbox/virtualbox.go
+++ b/drivers/virtualbox/virtualbox.go
@@ -462,6 +462,8 @@ func (d *Driver) Remove() error {
 			return err
 		}
 	}
+	// vbox will not release it's lock immediately after the stop
+	time.Sleep(1 * time.Second)
 	return vbm("unregistervm", "--delete", d.MachineName)
 }