this derivation will be built:
  /nix/store/gpvc64c6mp2ivaibx9w18gcmaf21s859-check-grok.drv
building '/nix/store/gpvc64c6mp2ivaibx9w18gcmaf21s859-check-grok.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=21&system=aarch64-linux'
building '/nix/store/gpvc64c6mp2ivaibx9w18gcmaf21s859-check-grok.drv' on farm.numtide.com:50051
check-grok> elastic-arm-cb9b0b2d: building gpvc64c6mp2ivaibx9w18gcmaf21s859-check-grok.drv

upload niks3: ok