From ca4fc1c2c84376a34346abda96f08aba4831f809 Mon Sep 17 00:00:00 2001
From: Yifan Gu <gyf304@gmail.com>
Date: Tue, 19 Jan 2021 00:09:31 -0500
Subject: [PATCH] write error to stderr when VM fails to start

---
 vmcli/main.swift | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/vmcli/main.swift b/vmcli/main.swift
index 183880f..0e6b9ea 100644
--- a/vmcli/main.swift
+++ b/vmcli/main.swift
@@ -265,7 +265,9 @@ Omit mac address for a generated address.
             switch result {
             case .success:
                 return
-            case .failure:
+            case .failure(let error):
+                FileHandle.standardError.write(error.localizedDescription.data(using: .utf8)!)
+                FileHandle.standardError.write("\n".data(using: .utf8)!)
                 quit(1)
             }
         })