this derivation will be built:
  /nix/store/3k9a9xi0lcl0hcxss9spkzxha969y9hb-treefmt-check.drv
building '/nix/store/3k9a9xi0lcl0hcxss9spkzxha969y9hb-treefmt-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=22&system=aarch64-linux'
building '/nix/store/3k9a9xi0lcl0hcxss9spkzxha969y9hb-treefmt-check.drv' on farm.numtide.com:50051
treefmt-check> elastic-arm-779dd3ca: building 3k9a9xi0lcl0hcxss9spkzxha969y9hb-treefmt-check.drv
treefmt-check> treefmt v2.5.0traversed 2160 files
treefmt-check> emitted 506 files for processing
treefmt-check> formatted 506 files (0 changed) in 8.242s

upload niks3: ok