Update driver.go

driver.go

@@ -28,10 +28,12 @@ type hetznerDriver struct {
 }
 
 func (hd *hetznerDriver) checkBackoff() error {
-	if time.Now().Before(hd.nextTry) {
-		return fmt.Errorf("last failure too recent; waiting a bit before retrying")
-	}
-	return nil
+    now := time.Now()
+    if now.Before(hd.nextTry) {
+        waitDuration := time.Until(hd.nextTry)
+        return fmt.Errorf("last failure too recent; failed %d times in a row before this; retry after %s", hd.failuresInARow, waitDuration)
+    }
+    return nil
 }
 
 func (hd *hetznerDriver) handleBackoff(err error) {