these 3 derivations will be built:
  /nix/store/ys1l4q56vc2xk8b71c67g6bmmb4s0xxn-treefmt.toml.drv
  /nix/store/pcv4124mb8jgzi066hdjy11ri5xcpcga-treefmt.drv
  /nix/store/mcvpbg1lrld0m52nhnww9nbkj7chlysg-check-formatter.drv
building '/nix/store/mcvpbg1lrld0m52nhnww9nbkj7chlysg-check-formatter.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-darwin&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/mcvpbg1lrld0m52nhnww9nbkj7chlysg-check-formatter.drv' on farm.numtide.com:50051
check-formatter> mac02: building mcvpbg1lrld0m52nhnww9nbkj7chlysg-check-formatter.drv