this derivation will be built:
  /nix/store/9nnjfcz2rnvgy3nr6nf6md39yich37f2-iets-classic-2.34.9.drv
building '/nix/store/9nnjfcz2rnvgy3nr6nf6md39yich37f2-iets-classic-2.34.9.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/9nnjfcz2rnvgy3nr6nf6md39yich37f2-iets-classic-2.34.9.drv' on farm.numtide.com:50051
iets-classic-2.34.9> elastic-arm-2c14001d: building 9nnjfcz2rnvgy3nr6nf6md39yich37f2-iets-classic-2.34.9.drv