this derivation will be built:
  /nix/store/97dr08arfifff9j5g45fkzvbil7jyhfd-nix-shell.drv
these 2 paths will be fetched (218.0 KiB download, 1.0 MiB unpacked):
  /nix/store/n29871xgi22879yj34f96l538i27dym5-nix-update-1.16.0
  /nix/store/mwij29bfb1q89qr0hi01zrknj6cr1bjq-nixpkgs-review-4.0.0
building '/nix/store/97dr08arfifff9j5g45fkzvbil7jyhfd-nix-shell.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=21&system=aarch64-linux'
building '/nix/store/97dr08arfifff9j5g45fkzvbil7jyhfd-nix-shell.drv' on farm.numtide.com:50051
nix-shell> bld3: building 97dr08arfifff9j5g45fkzvbil7jyhfd-nix-shell.drv
nix-shell> Running phase: buildPhase

upload niks3: ok