this derivation will be built:
  /nix/store/3v0g1r91pyynvw0ig0hhl46p6f4zwm38-updater-tests-check.drv
3v0g1r91pyynvw0ig0hhl46p6f4zwm38-updater-tests-check.drv: mac02: not scheduled here: 3v0g1r91pyynvw0ig0hhl46p6f4zwm38-updater-tests-check.drv, asking the scheduler again