remove-label github action failing sometimes

[jywarren]

the remove-label github action is failing sometimes, like in:

#10138 & #10137

with the error message:

This request was automatically failed because there were no enabled runners online to process the request for more than 1 days.

[jywarren]

Here's a 2020 report of similar... unclear what caused it to clear up: https://gh.neting.ccmunity/t/queued-jobs-not-executing/143613

[jywarren]

Here's another recent job in an unrelated repo that had the same error: https://github.com/neovide/neovide/actions/runs/1088631240

[jywarren]

also noticing the same phrase in ci-for-research/on-demand-runner#6

[jywarren]

The relevant lines are here:

plots2/.github/workflows/tests.yml

Lines 192 to 205 in 6e499b5

	remove-labels:
	runs-on: ubuntu-latest
	needs: [add-label, unit-tests, functional-tests, integration-tests, system-tests]
	steps:
	- uses: buildsville/add-remove-label@v1
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	label: work-in-progress
	type: remove
	- uses: buildsville/add-remove-label@v1
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	label: ready-for-review
	type: add

and it uses this GH action: https://github.com/buildsville/add-remove-label

[jywarren]

Hmm. buildsville/add-remove-label had last commit in Apr 22, 2020, over a year ago. No issues on that repository.

[jywarren]

I opened an issue at buildsville/add-remove-label#3 !!