this derivation will be built:
  /nix/store/wac0xi9in8c6awg3nli2s33mm65qh461-updater-tests-check.drv
wac0xi9in8c6awg3nli2s33mm65qh461-updater-tests-check.drv: mac02: not scheduled here: wac0xi9in8c6awg3nli2s33mm65qh461-updater-tests-check.drv, asking the scheduler again