this derivation will be built:
  /nix/store/jcfi3mspqx0yrlg6ly052wnw716r4jdh-treefmt-check.drv
building '/nix/store/jcfi3mspqx0yrlg6ly052wnw716r4jdh-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-darwin'
building '/nix/store/jcfi3mspqx0yrlg6ly052wnw716r4jdh-treefmt-check.drv' on farm.numtide.com:50051
treefmt-check> mac02: building jcfi3mspqx0yrlg6ly052wnw716r4jdh-treefmt-check.drv
treefmt-check> traversed 555 files
treefmt-check> emitted 374 files for processing
treefmt-check> formatted 374 files (0 changed) in 6.429s