this derivation will be built:
  /nix/store/r5d4kqgklwwffg25bbbm6m3fj1d3q4if-spec-cue.drv
building '/nix/store/r5d4kqgklwwffg25bbbm6m3fj1d3q4if-spec-cue.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'
building '/nix/store/r5d4kqgklwwffg25bbbm6m3fj1d3q4if-spec-cue.drv' on farm.numtide.com:50051
spec-cue> elastic-arm-09bdbd10: building r5d4kqgklwwffg25bbbm6m3fj1d3q4if-spec-cue.drv
spec-cue> expected '}', found 'EOF':
spec-cue>     ./invalid/a.cue:1:6
spec-cue> expected '}', found 'EOF':
spec-cue>     ./invalid/a.cue:1:6

upload niks3: ok