name: labelprobe
on: [push]
jobs:
  a:
    runs-on: ubuntu-latest
    steps: [{run: echo LABEL_A}]
  b:
    runs-on: ubuntu-22.04
    steps: [{run: echo LABEL_B}]
  c:
    runs-on: ubuntu-20.04
    steps: [{run: echo LABEL_C}]
  d:
    runs-on: linux
    steps: [{run: echo LABEL_D}]
  e:
    runs-on: default
    steps: [{run: echo LABEL_E}]