these 5 derivations will be built:
  /nix/store/969p5vxgsp4g1kfbd3x69r1v3iw35n16-source.drv
  /nix/store/m96fxdpn9327src56700nh0nkwfclzj4-vendor-registry.drv
  /nix/store/xbxngrbinzii7c1r129b5al8s0dy4an4-vendor-cargo-deps.drv
  /nix/store/j8awxsajxfixjf6y3wvfp3zaw8zksm6v-harmonia-deps-3.2.0.drv
  /nix/store/9ll0qkx5pdpsd92yfa433s8ln0byxynk-harmonia-llvm-cov-3.2.0.drv
Failed to find a machine for remote build!
derivation: j8awxsajxfixjf6y3wvfp3zaw8zksm6v-harmonia-deps-3.2.0.drv
required (system, features): (aarch64-linux, [])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])
Failed to find a machine for remote build!
derivation: 9ll0qkx5pdpsd92yfa433s8ln0byxynk-harmonia-llvm-cov-3.2.0.drv
required (system, features): (aarch64-linux, [])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])