these 5 derivations will be built:
  /nix/store/8swvyj5hbfmr2mvbv2mi7k0bqrbc5f84-vendor-registry.drv
  /nix/store/l6kfz0ckff3ikg4lldfbz4qfcjxhqnnq-vendor-cargo-deps.drv
  /nix/store/zb5pv5rv88xlw8dy8ajih7av3m942k64-source.drv
  /nix/store/7mjrwb55wp162355bf6vs0dwlvm10i8l-harmonia-deps-3.2.0.drv
  /nix/store/hh56fa693zj0rjf9zlcxph1yz9a64fln-harmonia-llvm-cov-3.2.0.drv
Failed to find a machine for remote build!
derivation: 7mjrwb55wp162355bf6vs0dwlvm10i8l-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: hh56fa693zj0rjf9zlcxph1yz9a64fln-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], [])