these 4 derivations will be built:
  /nix/store/18i7y790s9azqcqnyragxmnabbb9kqac-iets-fuzz-diff-0.0.0.drv
  /nix/store/vbl1bvch5iba3w1y3limzfblg5y7342b-iets-0.2.0.drv
  /nix/store/gqq3h932w6xz65ki1b8lfn4bj2kafy0k-iets-conformance-adapter.drv
  /nix/store/8bdpca8jgzklgcc8cb2rzykm1mzpf9v0-nix-conformance-iets.drv
building '/nix/store/vbl1bvch5iba3w1y3limzfblg5y7342b-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=22&system=aarch64-linux'
building '/nix/store/18i7y790s9azqcqnyragxmnabbb9kqac-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'
warning: vbl1bvch5iba3w1y3limzfblg5y7342b-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
warning: 18i7y790s9azqcqnyragxmnabbb9kqac-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
vbl1bvch5iba3w1y3limzfblg5y7342b-iets-0.2.0.drv: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}
error: build of '/nix/store/vbl1bvch5iba3w1y3limzfblg5y7342b-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=22&system=aarch64-linux' failed: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}
error: Cannot build '/nix/store/vbl1bvch5iba3w1y3limzfblg5y7342b-iets-0.2.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/7ps0vsvjq39nya5a623pmah3pidyyhwf-iets-0.2.0
18i7y790s9azqcqnyragxmnabbb9kqac-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/18i7y790s9azqcqnyragxmnabbb9kqac-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/18i7y790s9azqcqnyragxmnabbb9kqac-iets-fuzz-diff-0.0.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/2ybh1v04yrsy96rgrxyh4a1wap1f61qc-iets-fuzz-diff-0.0.0
error: Cannot build '/nix/store/gqq3h932w6xz65ki1b8lfn4bj2kafy0k-iets-conformance-adapter.drv'.
       Reason: 2 dependencies failed.
       Output paths:
         /nix/store/fkmb6h286002wnn0q488y940ccwgnbgc-iets-conformance-adapter
error: Cannot build '/nix/store/8bdpca8jgzklgcc8cb2rzykm1mzpf9v0-nix-conformance-iets.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/cinnr2s8lkga8wlnb9qkpc42dm0lkap8-nix-conformance-iets