this derivation will be built:
  /nix/store/w3lvpd3wyxj5l30fq52rfwkhw36fg704-treefmt-check.drv
w3lvpd3wyxj5l30fq52rfwkhw36fg704-treefmt-check.drv: mac02: not scheduled here: w3lvpd3wyxj5l30fq52rfwkhw36fg704-treefmt-check.drv, asking the scheduler again