[Auto] Refactor GPT-Neo output tracing to standardized decorators (cluster-44018-2): merged 1 of 2 PRs

[evalstate]

Automated cluster merge summary for cluster-44018-2.

Merged:

• Refactor GPT-Neo output tracing to use capture_outputs/can_return_tuple huggingface/transformers#44018 — Merged locally with manual conflict resolution; kept the GPT-Neo output-capturing refactor while preserving current main's cache_position and cache update API changes.

Skipped:

• Refactor GPT-Neo to use @capture_outputs and @can_return_tuple decorators huggingface/transformers#44068 — Skipped as duplicate overlap with Refactor GPT-Neo output tracing to use capture_outputs/can_return_tuple huggingface/transformers#44018 on the same GPT-Neo refactor; later claimant and no clear approval/differentiation for a second competing PR.

Failed:

• None.

Notes:

• Cluster contains two near-duplicate PRs touching src/transformers/models/gpt_neo/modeling_gpt_neo.py and tests/models/gpt_neo/test_modeling_gpt_neo.py.
• Meta-issue Call to contributions: refactor output tracing in transformers huggingface/transformers#43979 is closed, but GPT-Neo had not yet been refactored on origin/main, so one PR still had merge value.
• Merge of Refactor GPT-Neo output tracing to use capture_outputs/can_return_tuple huggingface/transformers#44018 conflicted because main has since changed cache_position handling, create_causal_mask usage, and layer_past.update signature.
• Conflict resolution kept decorator-based output capture from Refactor GPT-Neo output tracing to use capture_outputs/can_return_tuple huggingface/transformers#44018 plus current main compatibility fixes, including cache_kwargs forwarding and torch.is_autocast_enabled(device_type).
• Validation completed with git diff --check and python -m py_compile on the edited model and test files.
• Full pytest could not be run in this environment because one Python lacked pytest and the available pytest environment was missing safetensors.
• Local merge commit created on the working branch: b7eee83.
• Repository was left on the requested branch with pre-existing untracked agent/session files untouched.

Next steps:

• Run the GPT-Neo test suite in a fully provisioned environment, at minimum tests/models/gpt_neo/test_modeling_gpt_neo.py.
• If additional confidence is needed, compare the final merged result against Refactor GPT-Neo to use @capture_outputs and @can_return_tuple decorators huggingface/transformers#44068 to confirm there is no extra useful change worth cherry-picking.
• Review the local merge commit b7eee83 before any downstream handoff or PR preparation.

[evalstate]

Trace for this mergeability run: https://huggingface.co/datasets/evalstate/transformers-merge-experiments/blob/main/2604240004-320RBk__dev__codex.jsonl