these 4 derivations will be built:
  /nix/store/wcrdklgxi8wad141475ccj96kmvivpfn-iets-static-aarch64-unknown-linux-musl-0.1.0.drv
  /nix/store/x924d6aigdqx0z9m9b41kmg1digprb6b-iets-static-x86_64-unknown-linux-musl-0.1.0.drv
  /nix/store/fkjpbrb96l5b60pcxzv4vilvcig0f1lq-iets-release-0.1.0.drv
  /nix/store/661f3n8nn9a5vf1fscyjwlv16m45089y-inputDerivation-effect-release.drv
building '/nix/store/wcrdklgxi8wad141475ccj96kmvivpfn-iets-static-aarch64-unknown-linux-musl-0.1.0.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=22&system=aarch64-linux'...
building '/nix/store/x924d6aigdqx0z9m9b41kmg1digprb6b-iets-static-x86_64-unknown-linux-musl-0.1.0.drv'...
copying 1 paths...
copying path '/nix/store/lgyrrfb1s8r65cbq9ax9bz20jp7fy0jh-source' to 'grpc://farm.numtide.com:50051'...
copying 1 paths to 'farm.numtide.com:50051'...
copying path '/nix/store/wcrdklgxi8wad141475ccj96kmvivpfn-iets-static-aarch64-unknown-linux-musl-0.1.0.drv' to 'farm.numtide.com:50051'...
building '/nix/store/wcrdklgxi8wad141475ccj96kmvivpfn-iets-static-aarch64-unknown-linux-musl-0.1.0.drv' on farm.numtide.com:50051...
copying 1 paths...
copying path '/nix/store/3cz7pmp868ngzh1llaslcm22jjikwn1b-iets-static-aarch64-unknown-linux-musl-0.1.0' from 'grpc://farm.numtide.com:50051'...
building '/nix/store/fkjpbrb96l5b60pcxzv4vilvcig0f1lq-iets-release-0.1.0.drv'...
building '/nix/store/661f3n8nn9a5vf1fscyjwlv16m45089y-inputDerivation-effect-release.drv'...