this derivation will be built:
  /nix/store/zanmnqs7vlg5hwj4ln1wyjdpsvmz1m4h-treefmt-check.drv
zanmnqs7vlg5hwj4ln1wyjdpsvmz1m4h-treefmt-check.drv: mac02: not scheduled here: zanmnqs7vlg5hwj4ln1wyjdpsvmz1m4h-treefmt-check.drv, asking the scheduler again