this derivation will be built:
  /nix/store/qddrw70mr21bxzrbqrrk8pkxah2m5wym-interpolate-conformance.drv
qddrw70mr21bxzrbqrrk8pkxah2m5wym-interpolate-conformance.drv: mac02: not scheduled here: qddrw70mr21bxzrbqrrk8pkxah2m5wym-interpolate-conformance.drv, asking the scheduler again