Post cache failed with "The template is not valid. hashFiles('**/Makefile') failed." on MacOs

[Yanjingzhu]

There is the ticket in community forum. https://github.community/t5/GitHub-Actions/Mac-OS-build-are-random-cancelled-no-I-do-not-have-fail-fast/td-p/54494
Customer reports that the post cache action on macos was failed randomly result in job cancellation. There is an example workflow run which met this issue: https://github.com/ankitects/anki/actions/runs/81024319
Restart the build process works fine.
Is there anything wrong in cache action?

[joshmgross]

Transferring to https://github.com/actions/runner since hashFiles is a function handled by the Runner and not exclusive to the cache action.

[TingluoHuang]

I think this is the side effect of the runner gets killed on the host machine which should never happen, I am following up with actions-compute team for this.
The error means the runner didn't get the correct result when executing node hashFiles.js, node exit with nonzero exit code. We do print the stderr/stdout to debug, but I think I will include those outputs in the exception message when this happens.

[TingluoHuang]

https://github.com/github/c2c-actions-compute/issues/713

[evandrocoan]

@Yanjingzhu thanks for reporting it here!

Up to today, I am still having this error popping randomly (only on Mac OS machines), while Linux/Windows machines are working fine.

These are the contents of line 227:

File: anki/.github/workflows/checks.yml
222:       - name: Cache cargo rspy
223:         if: matrix.python == '3.7'
224:         uses: actions/cache@v1
225:         with:
226:           path: ${{ github.workspace }}${{ matrix.SEP }}rspy${{ matrix.SEP }}target
227:           key: ${{ runner.os }}-cargo-rspy-${{ hashFiles('**/requirements.*') }}-${{ hashFiles('**/setup.py') }}-${{ hashFiles('**/Makefile') }}-${{ hashFiles('**/Cargo.toml') }}-${{ matrix.BUILD_TYPE }}-16-
228: 
229:       - name: Set up curl pyaudio, rsync
230:         if: matrix.os == 'windows-latest'

Yesterday I had a Mac OS build failing without any reason for this no valid error: https://github.com/evandroforks/anki/runs/687614069#step:51:1

##[error].github/workflows/checks.yml (Line: 227, Col: 16):
##[error]The template is not valid. .github/workflows/checks.yml (Line: 227, Col: 16): hashFiles('**/Cargo.toml') failed. Fail to hash files under directory '/Users/runner/runners/2.262.1/work/anki/anki'

No way my template was invalid. All other builds (linux/windows) passed fine.

This was not the first time a Mac OS build failed out of nowhere with that error.

[TingluoHuang]

You might need to turn on debug logging to get more information out. 😢
https://help.github.com/en/actions/configuring-and-managing-workflows/managing-a-workflow-run#enabling-step-debug-logging

[ericsciple]

i wonder if we should add an option so post doesnt recompute inputs