these 4 derivations will be built:
  /nix/store/2qbpw52hp219npm0wd0k8mqs7i0clzyi-iets-fuzz-diff-0.0.0.drv
  /nix/store/kahzzi1dsw5wz6qakg8i07n3wg29af2a-iets-0.2.0.drv
  /nix/store/vkyj431cy1jx1q91g3als85hnh3g9lhh-iets-conformance-adapter.drv
  /nix/store/r2b86ac1iybsfvskyp0bbli1yq8s8r0y-nix-conformance-iets.drv
building '/nix/store/kahzzi1dsw5wz6qakg8i07n3wg29af2a-iets-0.2.0.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'
warning: kahzzi1dsw5wz6qakg8i07n3wg29af2a-iets-0.2.0.drv: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}, waiting up to 120s for a worker
kahzzi1dsw5wz6qakg8i07n3wg29af2a-iets-0.2.0.drv: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}
error: build of '/nix/store/kahzzi1dsw5wz6qakg8i07n3wg29af2a-iets-0.2.0.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' failed: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}
error: Cannot build '/nix/store/kahzzi1dsw5wz6qakg8i07n3wg29af2a-iets-0.2.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/ki708dbgbcbhnfnfvgics4jd6jgkhmlq-iets-0.2.0
building '/nix/store/2qbpw52hp219npm0wd0k8mqs7i0clzyi-iets-fuzz-diff-0.0.0.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'
warning: 2qbpw52hp219npm0wd0k8mqs7i0clzyi-iets-fuzz-diff-0.0.0.drv: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}, waiting up to 120s for a worker
2qbpw52hp219npm0wd0k8mqs7i0clzyi-iets-fuzz-diff-0.0.0.drv: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}
error: build of '/nix/store/2qbpw52hp219npm0wd0k8mqs7i0clzyi-iets-fuzz-diff-0.0.0.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' failed: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}
error: Cannot build '/nix/store/2qbpw52hp219npm0wd0k8mqs7i0clzyi-iets-fuzz-diff-0.0.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/gpn1qx61ravxyvzdymq3k6d6sisw44qm-iets-fuzz-diff-0.0.0
error: Cannot build '/nix/store/vkyj431cy1jx1q91g3als85hnh3g9lhh-iets-conformance-adapter.drv'.
       Reason: 2 dependencies failed.
       Output paths:
         /nix/store/2ws7cdd1kl3cj49b7iqnkxhdcbr2b1nl-iets-conformance-adapter
error: Cannot build '/nix/store/r2b86ac1iybsfvskyp0bbli1yq8s8r0y-nix-conformance-iets.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/7s3rd9c1j1h217kbn602mhw2qlxv6af3-nix-conformance-iets