Pass stderr through to not wait for it

pkg/mounter/mounter.go

@@ -59,9 +59,10 @@ func New(meta *s3.FSMeta, cfg *s3.Config) (Mounter, error) {
 
 func fuseMount(path string, command string, args []string) error {
 	cmd := exec.Command(command, args...)
+	cmd.Stderr = os.Stderr
 	glog.V(3).Infof("Mounting fuse with command: %s and args: %s", command, args)
 
-	out, err := cmd.CombinedOutput()
+	out, err := cmd.Output()
 	if err != nil {
 		return fmt.Errorf("Error fuseMount command: %s\nargs: %s\noutput: %s", command, args, out)
 	}