fix test cases failed in nightly pipeline (#26714)

python/sglang/srt/entrypoints/engine.py

@@ -888,6 +888,12 @@ class Engine(EngineScoreMixin, EngineBase):
             and self.tokenizer_manager._subprocess_watchdog is not None
         ):
             self.tokenizer_manager._subprocess_watchdog.stop()
+
+        send_to_rpc = getattr(self, "send_to_rpc", None)
+        if send_to_rpc is not None:
+            send_to_rpc.close(linger=0)
+            self.send_to_rpc = None
+
         kill_process_tree(os.getpid(), include_parent=False, wait_timeout=60)
 
     def __enter__(self):

test/registered/ascend/llm_models/test_ascend_minimax_m2.py

@@ -37,6 +37,7 @@ class TestMiniMaxM2(GSM8KAscendMixin, CustomTestCase):
         "--chunked-prefill-size",
         "-1",
     ]
+    timeout_for_server_launch = 1800
 
 
 if __name__ == "__main__":