these 2 derivations will be built:
  /nix/store/mw8acpvrxqygdygnrgxdyxsb8dk7pc9w-treefmt.drv
  /nix/store/lbfzimn3igjm93n8cgqvgv2lizz3vfb4-treefmt-check.drv
building '/nix/store/mw8acpvrxqygdygnrgxdyxsb8dk7pc9w-treefmt.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/mw8acpvrxqygdygnrgxdyxsb8dk7pc9w-treefmt.drv'
building '/nix/store/lbfzimn3igjm93n8cgqvgv2lizz3vfb4-treefmt-check.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/lbfzimn3igjm93n8cgqvgv2lizz3vfb4-treefmt-check.drv'