these 3 derivations will be built:
  /nix/store/lj81bycihvj35napllkmy7bjdy1l4vl2-treefmt.toml.drv
  /nix/store/9f48g47rwrhvdrfkhr9gkrc7c50isg5a-treefmt.drv
  /nix/store/ca6mz7b7hfnplp7gamdvcl55czh8c153-check-formatter.drv
this path will be fetched (9.7 MiB download, 28.1 MiB unpacked):
  /nix/store/1lhvjb161y5878pkf697fyc40r19vv2y-ruff-0.16.8
building '/nix/store/lj81bycihvj35napllkmy7bjdy1l4vl2-treefmt.toml.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/lj81bycihvj35napllkmy7bjdy1l4vl2-treefmt.toml.drv' on farm.numtide.com:50051
treefmt.toml> bld3: building lj81bycihvj35napllkmy7bjdy1l4vl2-treefmt.toml.drv
treefmt.toml> structuredAttrs is enabled
building '/nix/store/9f48g47rwrhvdrfkhr9gkrc7c50isg5a-treefmt.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/9f48g47rwrhvdrfkhr9gkrc7c50isg5a-treefmt.drv' on farm.numtide.com:50051
treefmt> bld3: building 9f48g47rwrhvdrfkhr9gkrc7c50isg5a-treefmt.drv
treefmt> structuredAttrs is enabled
building '/nix/store/ca6mz7b7hfnplp7gamdvcl55czh8c153-check-formatter.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/ca6mz7b7hfnplp7gamdvcl55czh8c153-check-formatter.drv' on farm.numtide.com:50051
check-formatter> bld3: building ca6mz7b7hfnplp7gamdvcl55czh8c153-check-formatter.drv

upload niks3: ok