=== Avatar Training (fire-and-forget) ===
Script: train_pi0fast.py
Started: 2026-03-11 01:38:33 UTC

>>> [0/4] Raising file descriptor limit...
ulimit -n = 1048576
>>> [1/4] Setting environment...
  HF_TOKEN set: 37 chars
  WANDB_API_KEY set: 0 chars
>>> [2/4] Logging into HuggingFace...
The token has not been saved to the git credentials helper. Pass `add_to_git_credential=True` in this function directly or `--add-to-git-credential` if using via `hf`CLI if you want to set the git credential as well.
Token is valid (permission: write).
The token `avatar` has been saved to /root/.cache/huggingface/stored_tokens
Your token has been saved to /root/.cache/huggingface/token
Login successful.
Note: Environment variable`HF_TOKEN` is set and is the current active token independently from the token you've just configured.
⚠️  Warning: 'huggingface-cli login' is deprecated. Use 'hf auth login' instead.
>>> [3/4] Pre-downloading pretrained model...
  Downloading lerobot/pi0fast-base (default)...

Fetching 6 files:   0%|          | 0/6 [00:00<?, ?it/s]
Fetching 6 files:  17%|█▋        | 1/6 [00:00<00:00,  5.20it/s]
Fetching 6 files:  67%|██████▋   | 4/6 [00:38<00:20, 10.43s/it]
Fetching 6 files: 100%|██████████| 6/6 [00:38<00:00,  6.44s/it]
  Cached at /root/.cache/huggingface/hub/models--lerobot--pi0fast-base/snapshots/0737e07fac1e63519c0bd38bd869934ecd9c3f86
  GPUs: 1x NVIDIA A100-SXM4-80GB
>>> [4/4] Launching accelerate with 1 GPUs...
  Script: train_pi0fast.py
  Train args: --dataset fixed_motion_simple --steps 5000 --batch-size 4 --save-freq 1000 --push-to-hub --task-text move arm back and forth

usage: train_pi0fast.py [-h] --dataset
                        {fish_box_left_joint,simple_alpha_backforth,fixed_motion_simple}
                        [--steps STEPS] [--batch-size BATCH_SIZE] [--lr LR]
                        [--chunk-size CHUNK_SIZE] [--save-freq SAVE_FREQ]
                        [--log-freq LOG_FREQ] [--num-workers NUM_WORKERS]
                        [--seed SEED] [--push-to-hub]
                        [--pretrained-path PRETRAINED_PATH] [--wandb]
                        [--output-dir OUTPUT_DIR] --task-text TASK_TEXT
train_pi0fast.py: error: unrecognized arguments: arm back and forth

>>> Training finished with exit code 2
Ended: 2026-03-11 01:39:15 UTC
>>> Saving training log to HuggingFace...