this derivation will be built:
  /nix/store/bidaykvhmnbkzsgpqg9sm5q6pgq6105b-check-mardi-gras.drv
building '/nix/store/bidaykvhmnbkzsgpqg9sm5q6pgq6105b-check-mardi-gras.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/bidaykvhmnbkzsgpqg9sm5q6pgq6105b-check-mardi-gras.drv' on farm.numtide.com:50051
check-mardi-gras> bld3: building bidaykvhmnbkzsgpqg9sm5q6pgq6105b-check-mardi-gras.drv

upload niks3: ok