these 4 derivations will be built:
  /nix/store/3fxyvi9dw7jnw4iqg4k9jv64rkzxvfw1-iets-fuzz-diff-0.0.0.drv
  /nix/store/ji966qzcz2ab9xl0x3ms49bcimxnybba-iets-0.1.0.drv
  /nix/store/88kdw10v3vm93z1fryvw8id2knvcs26z-iets-conformance-adapter.drv
  /nix/store/z2sgrb20l85xhp5b882qzwhgva4fm58m-nix-conformance-iets.drv
warning: 88kdw10v3vm93z1fryvw8id2knvcs26z-iets-conformance-adapter.drv: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}, waiting up to 120s for a worker
88kdw10v3vm93z1fryvw8id2knvcs26z-iets-conformance-adapter.drv: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}
error: build of '/nix/store/88kdw10v3vm93z1fryvw8id2knvcs26z-iets-conformance-adapter.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/88kdw10v3vm93z1fryvw8id2knvcs26z-iets-conformance-adapter.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/n5730ji4z5qcw1mmnllinaybyjszn32p-iets-conformance-adapter
error: Cannot build '/nix/store/z2sgrb20l85xhp5b882qzwhgva4fm58m-nix-conformance-iets.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/bb2cryns112mx3g5qdis1j9fcr20slgx-nix-conformance-iets