this derivation will be built: /nix/store/prg5gp48cny9krr8bng92axl6qdgpx1q-cargo-fmt-check.drv building '/nix/store/prg5gp48cny9krr8bng92axl6qdgpx1q-cargo-fmt-check.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/prg5gp48cny9krr8bng92axl6qdgpx1q-cargo-fmt-check.drv' on farm.numtide.com:50051 cargo-fmt-check> elastic-arm-27a8ae70: building prg5gp48cny9krr8bng92axl6qdgpx1q-cargo-fmt-check.drv upload niks3: ok