these 4 derivations will be built:
  /nix/store/2p7p1cq7n8cjadkbqkir84fn27gfbmkv-iets-static-x86_64-unknown-linux-musl-0.1.0.drv
  /nix/store/4h7szwga5grfg8jszki21k5qzg3qy6qx-iets-static-aarch64-unknown-linux-musl-0.1.0.drv
  /nix/store/ljjxnsxvmgwj745r44m18m04v4n515y8-iets-release-0.1.0.drv
  /nix/store/11mahipqnql9jyj8jx67a984n687bpcw-inputDerivation-effect-release.drv
building '/nix/store/4h7szwga5grfg8jszki21k5qzg3qy6qx-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=20&system=aarch64-linux'...
building '/nix/store/2p7p1cq7n8cjadkbqkir84fn27gfbmkv-iets-static-x86_64-unknown-linux-musl-0.1.0.drv'...
copying 1 paths...
copying path '/nix/store/cr463nwqh4v86r5xfpjxsg3l1m9ym6fy-source' to 'grpc://farm.numtide.com:50051'...
copying 1 paths to 'farm.numtide.com:50051'...
copying path '/nix/store/4h7szwga5grfg8jszki21k5qzg3qy6qx-iets-static-aarch64-unknown-linux-musl-0.1.0.drv' to 'farm.numtide.com:50051'...
building '/nix/store/4h7szwga5grfg8jszki21k5qzg3qy6qx-iets-static-aarch64-unknown-linux-musl-0.1.0.drv' on farm.numtide.com:50051...
copying 1 paths...
copying path '/nix/store/0mlv0djr9j9ffbkkflmjqi92kkkn2dni-iets-static-aarch64-unknown-linux-musl-0.1.0' from 'grpc://farm.numtide.com:50051'...
building '/nix/store/ljjxnsxvmgwj745r44m18m04v4n515y8-iets-release-0.1.0.drv'...
building '/nix/store/11mahipqnql9jyj8jx67a984n687bpcw-inputDerivation-effect-release.drv'...