“unused_pretrained_keys“ when running the demo.py

when i ran
python ../../tools/demo.py --resume SiamMask_DAVIS.pth --config config_davis.json

i got this problem：

[2019-07-27 03:41:02,041-rk0-features.py# 66] Current training 0 layers:
[2019-07-27 03:41:02,042-rk0-features.py# 66] Current training 1 layers:
[2019-07-27 03:41:02,139-rk0-load_helper.py# 31] load pretrained model from SiamMask_DAVIS.pth.1
[2019-07-27 03:41:12,180-rk0-load_helper.py# 25] remove prefix 'module.'
[2019-07-27 03:41:12,182-rk0-load_helper.py# 16] [Warning] unused_pretrained_keys: {'features.features.layer3.3.bn2.num_batches_tracked', 'rpn_model.cls.head.1.num_batches_tracked', 'rpn_model.loc.head.1.num_batches_tracked', 'features.features.layer2.3.bn2.num_batches_tracked', 'features.features.layer2.0.bn2.num_batches_tracked', 'features.features.layer3.0.downsample.1.num_batches_tracked', 'features.features.layer3.5.bn3.num_batches_tracked', 'features.features.layer3.1.bn1.num_batches_tracked', 'features.features.layer1.2.bn1.num_batches_tracked', 'rpn_model.loc.conv_search.1.num_batches_tracked', 'mask_model.mask.conv_search.1.num_batches_tracked', 'features.features.layer3.1.bn2.num_batches_tracked', 'rpn_model.loc.conv_kernel.1.num_batches_tracked', 'features.features.layer1.0.bn3.num_batches_tracked', 'features.features.layer3.3.bn1.num_batches_tracked', 'features.features.layer1.0.bn1.num_batches_tracked', 'features.features.layer3.2.bn3.num_batches_tracked', 'features.features.layer3.5.bn2.num_batches_tracked', 'features.features.layer3.4.bn2.num_batches_tracked', 'features.features.layer1.0.downsample.1.num_batches_tracked', 'features.features.layer2.3.bn3.num_batches_tracked', 'features.features.layer3.0.bn3.num_batches_tracked', 'features.features.layer1.2.bn3.num_batches_tracked', 'rpn_model.cls.conv_kernel.1.num_batches_tracked', 'mask_model.mask.head.1.num_batches_tracked', 'features.features.layer1.2.bn2.num_batches_tracked', 'features.features.bn1.num_batches_tracked', 'mask_model.mask.conv_kernel.1.num_batches_tracked', 'features.features.layer2.2.bn1.num_batches_tracked', 'features.features.layer2.0.bn1.num_batches_tracked', 'features.features.layer1.1.bn3.num_batches_tracked', 'features.features.layer3.0.bn1.num_batches_tracked', 'rpn_model.cls.conv_search.1.num_batches_tracked', 'features.features.layer3.0.bn2.num_batches_tracked', 'features.features.layer2.1.bn2.num_batches_tracked', 'features.downsample.downsample.1.num_batches_tracked', 'features.features.layer2.0.bn3.num_batches_tracked', 'features.features.layer1.1.bn1.num_batches_tracked', 'features.features.layer1.1.bn2.num_batches_tracked', 'features.features.layer2.3.bn1.num_batches_tracked', 'features.features.layer1.0.bn2.num_batches_tracked', 'features.features.layer2.1.bn3.num_batches_tracked', 'features.features.layer3.5.bn1.num_batches_tracked', 'features.features.layer2.1.bn1.num_batches_tracked', 'features.features.layer2.2.bn2.num_batches_tracked', 'features.features.layer2.2.bn3.num_batches_tracked', 'features.features.layer3.2.bn1.num_batches_tracked', 'features.features.layer3.2.bn2.num_batches_tracked', 'features.features.layer2.0.downsample.1.num_batches_tracked', 'features.features.layer3.4.bn1.num_batches_tracked', 'features.features.layer3.4.bn3.num_batches_tracked', 'features.features.layer3.3.bn3.num_batches_tracked', 'features.features.layer3.1.bn3.num_batches_tracked'}
[2019-07-27 03:41:12,182-rk0-load_helper.py# 17] unused checkpoint keys:53
[2019-07-27 03:41:12,182-rk0-load_helper.py# 18] used keys:303

how can i fix it ?