this derivation will be built:
  /nix/store/549ix3r5m1a939mr320c0mss6rw6hvzx-nix-shell.drv
these 2 paths will be fetched (218.0 KiB download, 1.0 MiB unpacked):
  /nix/store/p6q1p3zlmz22rzxn99gg438jw63ra2wj-nix-update-1.16.0
  /nix/store/7l9gnci9ag6n753jvg1w9ilmrwdi364s-nixpkgs-review-4.0.0
building '/nix/store/549ix3r5m1a939mr320c0mss6rw6hvzx-nix-shell.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=22&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/549ix3r5m1a939mr320c0mss6rw6hvzx-nix-shell.drv' on farm.numtide.com:50051
nix-shell> elastic-arm-726ae161: building 549ix3r5m1a939mr320c0mss6rw6hvzx-nix-shell.drv
nix-shell> Running phase: buildPhase