these 2 derivations will be built:
  /nix/store/y01yyld9xfpf7q5a5q4gg8si44z290cw-iets-0.1.0.drv
  /nix/store/8x8iy6dbqnijdzs7k73dwinqi387h2rl-iets-langtests.drv
building '/nix/store/8x8iy6dbqnijdzs7k73dwinqi387h2rl-iets-langtests.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/8x8iy6dbqnijdzs7k73dwinqi387h2rl-iets-langtests.drv' on farm.numtide.com:50051
iets-langtests> elastic-arm-16c3f6ed: building 8x8iy6dbqnijdzs7k73dwinqi387h2rl-iets-langtests.drv
iets-langtests> pass=290 fail=0
iets-langtests> 

upload niks3: ok