these 3 derivations will be built:
  /nix/store/w0zw0skapqclal0xg4hxgjvf0nay8bwz-source.drv
  /nix/store/9f1szqmv96ny7na97iyflcvpsj1x5iak-harmonia-deps-3.1.0.drv
  /nix/store/r9wb6l37zlkfyg8gh0k100jjd1s0hp87-harmonia-clippy-3.1.0.drv
Failed to find a machine for remote build!
derivation: w0zw0skapqclal0xg4hxgjvf0nay8bwz-source.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: 9f1szqmv96ny7na97iyflcvpsj1x5iak-harmonia-deps-3.1.0.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: r9wb6l37zlkfyg8gh0k100jjd1s0hp87-harmonia-clippy-3.1.0.drv
required (system, features): (aarch64-linux, [])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])