these 3 derivations will be built:
  /nix/store/r0qk1a3ksn1rx4kz3w5yflhjmlvbl76l-iets-0.2.0.drv
  /nix/store/81zf9jxd5y6fv23kw62pi0al83vislrf-iets-conformance-adapter.drv
  /nix/store/907xs066c351q01r1wjsbxnqrqydhqzy-nix-conformance-iets.drv
warning: r0qk1a3ksn1rx4kz3w5yflhjmlvbl76l-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
r0qk1a3ksn1rx4kz3w5yflhjmlvbl76l-iets-0.2.0.drv: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}
error: build of '/nix/store/r0qk1a3ksn1rx4kz3w5yflhjmlvbl76l-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/r0qk1a3ksn1rx4kz3w5yflhjmlvbl76l-iets-0.2.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/f60z3svrj7ifzxsmgy0q1wnpimmisws5-iets-0.2.0
error: Cannot build '/nix/store/81zf9jxd5y6fv23kw62pi0al83vislrf-iets-conformance-adapter.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/nvckxq75mabmp8adzqnay8b2jvx54l08-iets-conformance-adapter
error: Cannot build '/nix/store/907xs066c351q01r1wjsbxnqrqydhqzy-nix-conformance-iets.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/55ijnsy6irhgdbyh3yvff02zw4xbpg0b-nix-conformance-iets