fix(test): ssh diagnostic backup

tests/test_backup.py

@@ -42,14 +42,17 @@ def test_ssh(host: str) -> bool:
         u.error("failed to login using SSH public key authentication")
         return False
     except subprocess.TimeoutExpired:
+        u.error("timeout")
         try:
             cmd_port = "nc -z -w2 {} 22".format(host)
             subprocess.check_output(cmd_port, shell=True, timeout=5)
-            u.error("failed to bind SSH port")
         except subprocess.CalledProcessError:
-            cmd_ping = "ping -c2 -w4 {}".format(host)
-            subprocess.check_output(cmd_ping, shell=True, timeout=15)
-            u.error("failed to ping host")
+            u.error("failed to bind SSH port")
+            try:
+                cmd_ping = "ping -c2 -w4 {}".format(host)
+                subprocess.check_output(cmd_ping, shell=True, timeout=15)
+            except subprocess.CalledProcessError:
+                u.error("failed to ping host")
         return False
 
     return True