these 4 derivations will be built:
  /nix/store/08hfy28ywzlnh14j2h4j1l6725k7klyx-Cargo.toml.drv
  /nix/store/2v4vslkl3d712p6clqnjs6s9x1a49cm9-source.drv
  /nix/store/9f428jqjsjfnwhc1n9k08g7j8kl02q0z-harmonia-deps-3.1.0.drv
  /nix/store/k37lfmkafq6mca6p300fyspk6pmysg6i-harmonia-clippy-3.1.0.drv
Failed to find a machine for remote build!
derivation: 08hfy28ywzlnh14j2h4j1l6725k7klyx-Cargo.toml.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: 2v4vslkl3d712p6clqnjs6s9x1a49cm9-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: 9f428jqjsjfnwhc1n9k08g7j8kl02q0z-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: k37lfmkafq6mca6p300fyspk6pmysg6i-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], [])