these 4 derivations will be built:
  /nix/store/0iikczpm7hykk7dd1qi7xsimdlzj4c8n-Cargo.toml.drv
  /nix/store/mri4snp0gvkff3q1kpzdsl2qg1z6hbjh-source.drv
  /nix/store/kc23b0c9i7blpsbwcywd7c91qmskkayl-harmonia-deps-3.2.0.drv
  /nix/store/rfw21kd4afym2jy5hrz7yad52hhp5xqx-harmonia-3.2.0.drv
Failed to find a machine for remote build!
derivation: 0iikczpm7hykk7dd1qi7xsimdlzj4c8n-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: mri4snp0gvkff3q1kpzdsl2qg1z6hbjh-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: kc23b0c9i7blpsbwcywd7c91qmskkayl-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: rfw21kd4afym2jy5hrz7yad52hhp5xqx-harmonia-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], [])