these 4 derivations will be built:
  /nix/store/j79s174djkx2qc2930rcl9z8mn0439m7-iets-static-aarch64-unknown-linux-musl-0.2.0.drv
  /nix/store/kxdbzb3ypvf1fihzmnx89i6slafb0v4l-iets-static-x86_64-unknown-linux-musl-0.2.0.drv
  /nix/store/jfzaxs5fz1p7vmxhv40nkr8lmjk3157m-iets-release-0.2.0.drv
  /nix/store/54rdn4xf9z2qqawh4cqijdc1yqrgkwz2-inputDerivation-effect-release.drv
building '/nix/store/j79s174djkx2qc2930rcl9z8mn0439m7-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/kxdbzb3ypvf1fihzmnx89i6slafb0v4l-iets-static-x86_64-unknown-linux-musl-0.2.0.drv'...
copying 1 paths...
copying path '/nix/store/n9in6i18j5gwxry4m1kpbdk07zaf0x5a-source' to 'grpc://farm.numtide.com:50051'...
copying 1 paths to 'farm.numtide.com:50051'...
copying path '/nix/store/j79s174djkx2qc2930rcl9z8mn0439m7-iets-static-aarch64-unknown-linux-musl-0.2.0.drv' to 'farm.numtide.com:50051'...
building '/nix/store/j79s174djkx2qc2930rcl9z8mn0439m7-iets-static-aarch64-unknown-linux-musl-0.2.0.drv' on farm.numtide.com:50051...
copying 1 paths...
copying path '/nix/store/lxwp466jx7bhlx5j6pbmyw5vmjhs55bw-iets-static-aarch64-unknown-linux-musl-0.2.0' from 'grpc://farm.numtide.com:50051'...
building '/nix/store/jfzaxs5fz1p7vmxhv40nkr8lmjk3157m-iets-release-0.2.0.drv'...
building '/nix/store/54rdn4xf9z2qqawh4cqijdc1yqrgkwz2-inputDerivation-effect-release.drv'...