these 2 derivations will be built:
  /nix/store/rm47abaz0ryfhi598zxim9lykik9lwqk-iets-conformance-adapter.drv
  /nix/store/k11ccnxn21g2fiifwz8ycjbj4f7l2m8q-nix-conformance-iets.drv
building '/nix/store/rm47abaz0ryfhi598zxim9lykik9lwqk-iets-conformance-adapter.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'
building '/nix/store/rm47abaz0ryfhi598zxim9lykik9lwqk-iets-conformance-adapter.drv' on farm.numtide.com:50051
iets-conformance-adapter> elastic-arm-0a686c29: building rm47abaz0ryfhi598zxim9lykik9lwqk-iets-conformance-adapter.drv
iets-conformance-adapter> structuredAttrs is enabled
building '/nix/store/k11ccnxn21g2fiifwz8ycjbj4f7l2m8q-nix-conformance-iets.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'