include-source: false # Drop file/line/col from output --- on: push jobs: bad-strategy-key: strategy: bad-key: os: [10] runs-on: macos-latest steps: - run: echo hi --- { "errors": [ { "Message": ".github/workflows/errors-matrix-bad-key.yml (Line: 5, Col: 7): Unexpected value 'bad-key'" } ] }