this derivation will be built:
  /nix/store/5pc9l5fcjlis2hv4f46s4mbghfy2dsb8-updater-tests-check.drv
5pc9l5fcjlis2hv4f46s4mbghfy2dsb8-updater-tests-check.drv: mac02: not scheduled here: 5pc9l5fcjlis2hv4f46s4mbghfy2dsb8-updater-tests-check.drv, asking the scheduler again