Hosted runner runtime
GitHub Actions self-hosted runner ARM32 unsupported Node runtime JavaScript action Raspberry Pi node20
A Raspberry Pi-class runner reports an unsupported Node runtime when invoking a common action.
Agent Quick Fix
Repair against the current GitHub Actions runner contract, then keep the change narrow and source-backed.
Product: GitHub Actions runner
Current-contract area: ARM32 self-hosted runner loses JavaScript action support
Likely root cause: A Raspberry Pi-class runner reports an unsupported Node runtime when invoking a common action.
Repair direction: Verifier executes on the target host matrix and checks a forward-compatible action/runtime change. Check the supported runner/runtime matrix, not just a local Node invocation.
Symptom
A Raspberry Pi-class runner reports an unsupported Node runtime when invoking a common action.
Why This Happens
The action's host runtime and runner compatibility are supplied by the CI platform, not by the repository's package.json or source tree.
Common Wrong Fixes
- Changing local code without checking the current external contract.
- Retrying the same install, build, or API call with no version/source change.
- Applying a broad unsafe bypass when a narrow compatibility fix is available.
Codex Search Keywords
These are the search terms observed in a neutral Codex validation run for this failure shape.
GitHub Actions self-hosted runner ARM32 unsupported Node runtime JavaScript action Raspberry Pi node20
site:github.com/actions/runner armv7 node20 self-hosted runner unsupported
"Node.js 20" "linux-arm" "actions runner"
https://raw.githubusercontent.com/nodejs/node/main/BUILDING.md
GitHub Actions runner Node 24 armv7 not supported JavaScript actions
Source Trail
GitHub source file/reference: