this derivation will be built:
  /nix/store/7cnv5i6021yr3kgs2vw08bcmrf90z5ss-iets-classic-2.34.9.drv
building '/nix/store/7cnv5i6021yr3kgs2vw08bcmrf90z5ss-iets-classic-2.34.9.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=22&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/7cnv5i6021yr3kgs2vw08bcmrf90z5ss-iets-classic-2.34.9.drv' on farm.numtide.com:50051
iets-classic-2.34.9> elastic-arm-0a686c29: building 7cnv5i6021yr3kgs2vw08bcmrf90z5ss-iets-classic-2.34.9.drv