在google colab中使用TensorFlow对象检测Api下载预训练的高效Det会给出一系列未知的警告？

!pip install tensorflow==2.5.0
!pip install tensorflow-model-optimization
!pip install tf_slim
!pip install pycocotools

!git clone https://github.com/tensorflow/models.git

import os

if not os.path.exists('/content/models/research/object_detection/test_data/pretrained_models/efficientdet_d0_coco17_tpu-32.tar.gz'):
    !wget http://download.tensorflow.org/models/object_detection/tf2/20200711/efficientdet_d0_coco17_tpu-32.tar.gz
    !tar -xf efficientdet_d0_coco17_tpu-32.tar.gz
    !mv efficientdet_d0_coco17_tpu-32 /content/models/research/object_detection/test_data/pretrained_models/

%cd /content/models/research/object_detection

!python object_detection/model_main_tf2.py \
    --pipeline_config_path=models/research/object_detection/configs/tf2/ssd_efficientdet_d0_512x512_coco17_tpu-8.config \
    --model_dir=pretrained_models/efficientdet_d0_coco17_tpu-32 \
    --checkpoint_dir=pretrained_models/efficientdet_d0_coco17_tpu-32 \
    --alsologtostderr