these 10 derivations will be built:
  /nix/store/15p5mwcpkwg8rvcvib6pjzqb8kyhi93g-cargo-package-rand_core-0.10.1.drv
  /nix/store/2cb36szfvpcknk332g72p4av39v6ixc2-cargo-package-rand-0.10.2.drv
  /nix/store/lgzywcf7mi2ll7mn0hdgr9mianbs8250-Cargo.toml.drv
  /nix/store/am4fz7vgiz7si5nyj3nlwl7lbqzw4yq4-source.drv
  /nix/store/5jy65ssxas60ck4rriawam6xylpz1mx3-cargo-package-chacha20-0.10.2.drv
  /nix/store/xza3yc3l0w60ndq05mnhs6mk1zzlzrs7-cargo-package-rand-0.9.5.drv
  /nix/store/p2swq5dlvxk1vj6ay230jmjlfak83d0i-vendor-registry.drv
  /nix/store/w49ipm5vaqrkffsl78fcj3qpwzpvkw06-vendor-cargo-deps.drv
  /nix/store/vdk3jshpjf4rr14ch0ds3gpx2s5phnhx-harmonia-deps-3.2.0.drv
  /nix/store/34f3zypsvv4xrhqfz6dilkscg58ab1l6-harmonia-3.2.0.drv
Failed to find a machine for remote build!
derivation: 2cb36szfvpcknk332g72p4av39v6ixc2-cargo-package-rand-0.10.2.drv
required (system, features): (aarch64-linux, [])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])