these 6 derivations will be built:
  /nix/store/9lmg47m5is05izgxlbkfq332xhs9hqdi-cargo-package-proc-macro2-1.0.107.drv
  /nix/store/q9fn0xxcknlnb8i4vkm8zjrpzzzw146p-vendor-registry.drv
  /nix/store/32w0v5sdmr0bj896imqp99d4ffky56q7-vendor-cargo-deps.drv
  /nix/store/j8kbwlmw9xw3h0j2kvdc9k09d8mysvd0-source.drv
  /nix/store/mijrh9dknld6h51w3bh9368m97x5r1sq-harmonia-deps-3.1.0.drv
  /nix/store/hfd5755pfch24hw20rj8mxmc495yv60d-harmonia-clippy-3.1.0.drv
Failed to find a machine for remote build!
derivation: 9lmg47m5is05izgxlbkfq332xhs9hqdi-cargo-package-proc-macro2-1.0.107.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: j8kbwlmw9xw3h0j2kvdc9k09d8mysvd0-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: mijrh9dknld6h51w3bh9368m97x5r1sq-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: hfd5755pfch24hw20rj8mxmc495yv60d-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], [])