this derivation will be built:
  /nix/store/m6vh6s7bqikwgd29w78c9k1i6qdzdrd7-check-formatelf.drv
building '/nix/store/m6vh6s7bqikwgd29w78c9k1i6qdzdrd7-check-formatelf.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=21&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/m6vh6s7bqikwgd29w78c9k1i6qdzdrd7-check-formatelf.drv' on farm.numtide.com:50051
check-formatelf> elastic-arm-fb7216db: building m6vh6s7bqikwgd29w78c9k1i6qdzdrd7-check-formatelf.drv