this derivation will be built:
  /nix/store/jc69720fny3c8kdavsl6wa7vgypkbgds-harmonia-llvm-cov-3.2.0.drv
this path will be fetched (1.5 MiB download, 4.1 MiB unpacked):
  /nix/store/l92scd56x0m7d7ybdf3yrkf7k92ybbzp-cargo-llvm-cov-0.9.0
Failed to find a machine for remote build!
derivation: jc69720fny3c8kdavsl6wa7vgypkbgds-harmonia-llvm-cov-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], [])