this derivation will be built:
  /nix/store/42740kzhirll8fifgg1ss0rrnkslcv0x-instance-eval.drv
building '/nix/store/42740kzhirll8fifgg1ss0rrnkslcv0x-instance-eval.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/42740kzhirll8fifgg1ss0rrnkslcv0x-instance-eval.drv' on farm.numtide.com:50051
instance-eval> elastic-arm-d04fab1c: building 42740kzhirll8fifgg1ss0rrnkslcv0x-instance-eval.drv
instance-eval> structuredAttrs is enabled