this derivation will be built:
  /nix/store/mzfzrn42qgg3wp6pdwgibzfpf133dwsp-nix-shell.drv
building '/nix/store/mzfzrn42qgg3wp6pdwgibzfpf133dwsp-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=20&system=aarch64-linux'
building '/nix/store/mzfzrn42qgg3wp6pdwgibzfpf133dwsp-nix-shell.drv' on farm.numtide.com:50051
nix-shell> elastic-arm-39e1b0da: building mzfzrn42qgg3wp6pdwgibzfpf133dwsp-nix-shell.drv
nix-shell> Running phase: buildPhase

upload niks3: ok