=================================== FAILURES ===================================
_________________ TestEngine.test_missing_value_handle_more_na _________________

self = <python_package_test.test_engine.TestEngine testMethod=test_missing_value_handle_more_na>

    def test_missing_value_handle_more_na(self):
        X_train = np.ones((100, 1))
        y_train = np.ones(100)
        trues = random.sample(range(100), 80)
        for idx in trues:
            X_train[idx, 0] = np.nan
            y_train[idx] = 0
        lgb_train = lgb.Dataset(X_train, y_train)
        lgb_eval = lgb.Dataset(X_train, y_train)
    
        params = {
            'metric': 'l2',
            'verbose': -1,
            'boost_from_average': False
        }
        evals_result = {}
        gbm = lgb.train(params, lgb_train,
                        num_boost_round=20,
                        valid_sets=lgb_eval,
                        verbose_eval=False,
                        evals_result=evals_result)
        ret = mean_squared_error(y_train, gbm.predict(X_train))
>       self.assertLess(ret, 0.005)
E       AssertionError: 0.008207460416181563 not less than 0.005

/home/AzDevOps_azpcontainer/miniconda/envs/test-env/lib/python3.8/asyncio/tasks.py:490: TimeoutError