these 4 derivations will be built:
  /nix/store/mpcwvkl1r6m2rx1xkwv66jrjhxkyj057-iets-fuzz-diff-0.0.0.drv
  /nix/store/qpbvfzd4zkp0p6rhi3ilxh5za555ilv0-iets-0.2.0.drv
  /nix/store/x2plg1raxzg2pqb01nlj7x6i0rg9slnb-iets-conformance-adapter.drv
  /nix/store/ph1712y65sckxm0jrz2a4j7p7bbkjcg9-nix-conformance-iets.drv
building '/nix/store/mpcwvkl1r6m2rx1xkwv66jrjhxkyj057-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=23&system=aarch64-linux'
building '/nix/store/qpbvfzd4zkp0p6rhi3ilxh5za555ilv0-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=21&system=aarch64-linux'
warning: mpcwvkl1r6m2rx1xkwv66jrjhxkyj057-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
warning: qpbvfzd4zkp0p6rhi3ilxh5za555ilv0-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
mpcwvkl1r6m2rx1xkwv66jrjhxkyj057-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/mpcwvkl1r6m2rx1xkwv66jrjhxkyj057-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=23&system=aarch64-linux' failed: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}
error: Cannot build '/nix/store/mpcwvkl1r6m2rx1xkwv66jrjhxkyj057-iets-fuzz-diff-0.0.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/xnfkgl3r9yf23hrnygzh45daksklxp63-iets-fuzz-diff-0.0.0
qpbvfzd4zkp0p6rhi3ilxh5za555ilv0-iets-0.2.0.drv: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}
error: build of '/nix/store/qpbvfzd4zkp0p6rhi3ilxh5za555ilv0-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=21&system=aarch64-linux' failed: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}
error: Cannot build '/nix/store/qpbvfzd4zkp0p6rhi3ilxh5za555ilv0-iets-0.2.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/hl6g98j7mdskiyvhn6n3zahgl4mchsw7-iets-0.2.0
error: Cannot build '/nix/store/x2plg1raxzg2pqb01nlj7x6i0rg9slnb-iets-conformance-adapter.drv'.
       Reason: 2 dependencies failed.
       Output paths:
         /nix/store/1lqmrfsa0jhl2v5vz0gy9r4cmac427n1-iets-conformance-adapter
error: Cannot build '/nix/store/ph1712y65sckxm0jrz2a4j7p7bbkjcg9-nix-conformance-iets.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/vnjacz8wb2qc34jxrk6gfk7qwrpgf2k7-nix-conformance-iets