these 3 derivations will be built:
  /nix/store/6s77cv8bycm4scwk527vp7mf6i8ff32y-vendor-cargo-deps.drv
  /nix/store/slj8i4x49lbhrbl7170mpd17q238b03c-harmonia-deps-3.3.0.drv
  /nix/store/wyyhqhy4y7j5npb435nwlnd82i90y4x9-harmonia-llvm-cov-3.3.0.drv
Failed to find a machine for remote build!
derivation: slj8i4x49lbhrbl7170mpd17q238b03c-harmonia-deps-3.3.0.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: wyyhqhy4y7j5npb435nwlnd82i90y4x9-harmonia-llvm-cov-3.3.0.drv
required (system, features): (aarch64-linux, [])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])