these 4 derivations will be built:
  /nix/store/dph61w235raqpk3sh5lzcpicwpz50k4k-Cargo.toml.drv
  /nix/store/xpn305603apcwrxz1nhhhp6rkibf1kfz-source.drv
  /nix/store/9xlkshb57bxwczlryzjavkrpzxp1rjyd-harmonia-deps-3.2.0.drv
  /nix/store/1nmx3rcxlyyhwwk9y62frkmxvri1swzm-harmonia-3.2.0.drv
Failed to find a machine for remote build!
derivation: dph61w235raqpk3sh5lzcpicwpz50k4k-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: xpn305603apcwrxz1nhhhp6rkibf1kfz-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: 9xlkshb57bxwczlryzjavkrpzxp1rjyd-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: 1nmx3rcxlyyhwwk9y62frkmxvri1swzm-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], [])