this derivation will be built:
  /nix/store/v9n9b29wqw301490cd76358syylhqsqh-iets-langtests.drv
building '/nix/store/v9n9b29wqw301490cd76358syylhqsqh-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/v9n9b29wqw301490cd76358syylhqsqh-iets-langtests.drv' on farm.numtide.com:50051
iets-langtests> elastic-arm-7de56e47: building v9n9b29wqw301490cd76358syylhqsqh-iets-langtests.drv
iets-langtests> pass=291 fail=0
iets-langtests> 

upload niks3: ok