Friendlier connection error for docker-osx users

fig/cli/utils.py

@@ -4,6 +4,7 @@ from __future__ import division
 import datetime
 import os
 import socket
+import subprocess
 from .errors import UserError
 
 
@@ -108,3 +109,11 @@ def split_buffer(reader, separator):
 
     if len(buffered) > 0:
         yield buffered
+
+
+def call_silently(*args, **kwargs):
+    """
+    Like subprocess.call(), but redirects stdout and stderr to /dev/null.
+    """
+    with open(os.devnull, 'w') as shutup:
+        return subprocess.call(*args, stdout=shutup, stderr=shutup, **kwargs)