these 4 derivations will be built:
  /nix/store/vg9j525237cfb154v3mws87nysi6md6k-iets-static-x86_64-unknown-linux-musl-0.2.0.drv
  /nix/store/x3qg5mb10gj9gy3whl9m87xz0y64n2fk-iets-static-aarch64-unknown-linux-musl-0.2.0.drv
  /nix/store/spww99ykf0z9kpav2p6gxh5rdp7hjp5c-iets-release-0.2.0.drv
  /nix/store/craklv6jh7w3cw7adklrdxjh29v5j4nr-inputDerivation-effect-release.drv
building '/nix/store/x3qg5mb10gj9gy3whl9m87xz0y64n2fk-iets-static-aarch64-unknown-linux-musl-0.2.0.drv' on 'grpc://farm.numtide.com:50051?connect-timeout=20&system=aarch64-linux&token-file=/run/nix-farm-client/farm-token'...
building '/nix/store/vg9j525237cfb154v3mws87nysi6md6k-iets-static-x86_64-unknown-linux-musl-0.2.0.drv'...
copying 1 paths...
copying path '/nix/store/l4r9prch8ya93zcv54w7y4n96n465p1f-source' to 'grpc://farm.numtide.com:50051'...
copying 1 paths to 'farm.numtide.com:50051'...
copying path '/nix/store/x3qg5mb10gj9gy3whl9m87xz0y64n2fk-iets-static-aarch64-unknown-linux-musl-0.2.0.drv' to 'farm.numtide.com:50051'...
building '/nix/store/x3qg5mb10gj9gy3whl9m87xz0y64n2fk-iets-static-aarch64-unknown-linux-musl-0.2.0.drv' on farm.numtide.com:50051...
copying 1 paths...
copying path '/nix/store/5zkqzm2y4yh6qvr51wwgshwpxfyii2wx-iets-static-aarch64-unknown-linux-musl-0.2.0' from 'grpc://farm.numtide.com:50051'...
building '/nix/store/spww99ykf0z9kpav2p6gxh5rdp7hjp5c-iets-release-0.2.0.drv'...
building '/nix/store/craklv6jh7w3cw7adklrdxjh29v5j4nr-inputDerivation-effect-release.drv'...