these 5 derivations will be built:
  /nix/store/4y85gql6bm9r8rbx39r3my22pdjjip9w-source.drv
  /nix/store/njwn02g7lnf5nlbf96j2p8ymdqapjkh5-vendor-registry.drv
  /nix/store/dz6lsflm1gr7vcnmq67ls5x1z9qyv91h-vendor-cargo-deps.drv
  /nix/store/qqz35hbmmz5h2lbp3ggfjx5i4nz98lwh-harmonia-deps-3.3.0.drv
  /nix/store/l9l8m4bphib5w13mqg9j9qpj7wgkmmg9-harmonia-llvm-cov-3.3.0.drv
Failed to find a machine for remote build!
derivation: qqz35hbmmz5h2lbp3ggfjx5i4nz98lwh-harmonia-deps-3.3.0.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: l9l8m4bphib5w13mqg9j9qpj7wgkmmg9-harmonia-llvm-cov-3.3.0.drv
required (system, features): (aarch64-linux, [])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])