these 4 derivations will be built:
  /nix/store/3r7bsi7wwhy211j4wwhpi4k586iv02kl-iets-static-x86_64-unknown-linux-musl-0.1.0.drv
  /nix/store/npy1mn56c1cscmjxahldpw9d7m2338y6-iets-static-aarch64-unknown-linux-musl-0.1.0.drv
  /nix/store/hf5ipcqi80z9lin1mpiqpidw0dnbh8iz-iets-release-0.1.0.drv
  /nix/store/98i3qip06a5wb6dagy8cmyqwp7hs1y1k-inputDerivation-effect-release.drv
building '/nix/store/npy1mn56c1cscmjxahldpw9d7m2338y6-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/3r7bsi7wwhy211j4wwhpi4k586iv02kl-iets-static-x86_64-unknown-linux-musl-0.1.0.drv'...
copying 1 paths...
copying path '/nix/store/cg5lnx1k78bw46cf5ln87h120a5dfn20-source' to 'grpc://farm.numtide.com:50051'...
copying 1 paths to 'farm.numtide.com:50051'...
copying path '/nix/store/npy1mn56c1cscmjxahldpw9d7m2338y6-iets-static-aarch64-unknown-linux-musl-0.1.0.drv' to 'farm.numtide.com:50051'...
building '/nix/store/npy1mn56c1cscmjxahldpw9d7m2338y6-iets-static-aarch64-unknown-linux-musl-0.1.0.drv' on farm.numtide.com:50051...
copying 1 paths...
copying path '/nix/store/c9nvijydzm8lgks30pwfnacv7f715sj5-iets-static-aarch64-unknown-linux-musl-0.1.0' from 'grpc://farm.numtide.com:50051'...
building '/nix/store/hf5ipcqi80z9lin1mpiqpidw0dnbh8iz-iets-release-0.1.0.drv'...
building '/nix/store/98i3qip06a5wb6dagy8cmyqwp7hs1y1k-inputDerivation-effect-release.drv'...