these 3 derivations will be built:
  /nix/store/gfax2gk09wa4s6yj9acvjh74qk5sxpix-herdr-core-0.1.21-vendor.drv
  /nix/store/w9q9my61p0hvahnj568q3slyxfahaxx6-herdr-core-0.1.21.drv
  /nix/store/ca4dak1m3xknvqyyxl0ygn2b6vgr3axc-check-herdr-core.drv
building '/nix/store/ca4dak1m3xknvqyyxl0ygn2b6vgr3axc-check-herdr-core.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=22&restart-grace=900&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/ca4dak1m3xknvqyyxl0ygn2b6vgr3axc-check-herdr-core.drv' on farm.numtide.com:50051
check-herdr-core> elastic-arm-14d0871e: building ca4dak1m3xknvqyyxl0ygn2b6vgr3axc-check-herdr-core.drv