this derivation will be built:
  /nix/store/k6lg318r04fzjbn3ib0wzy3v1c5fj0x3-treefmt-check.drv
building '/nix/store/k6lg318r04fzjbn3ib0wzy3v1c5fj0x3-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/k6lg318r04fzjbn3ib0wzy3v1c5fj0x3-treefmt-check.drv' on farm.numtide.com:50051
treefmt-check> elastic-arm-b55ced5f: building k6lg318r04fzjbn3ib0wzy3v1c5fj0x3-treefmt-check.drv
treefmt-check> traversed 549 files
treefmt-check> emitted 371 files for processing
treefmt-check> formatted 371 files (0 changed) in 4.289s

upload niks3: ok