these 7 derivations will be built:
  /nix/store/j466x4mjc5fjnnl41mxryirgdswkipr6-cargo-src-futures-core-0.3.34.drv
  /nix/store/5s60d634d0ysm67zqp0mxssmkn970pam-cargo-package-futures-core-0.3.34.drv
  /nix/store/5cjqx3pvgmkpp6db33sdhgz95gypyb86-vendor-registry.drv
  /nix/store/mw071mgzjr5yh8cg308wi97r5n2r16ac-vendor-cargo-deps.drv
  /nix/store/i4a0sjcdv1g2blpkbn9nr1h7crfql0xg-source.drv
  /nix/store/rp3ah7ihxcwlz5jv7ddy3kd5k0qsj657-harmonia-deps-3.2.0.drv
  /nix/store/2sy90s0qjvq34lv3qxh5mcn6k5mivc30-harmonia-llvm-cov-3.2.0.drv
Failed to find a machine for remote build!
derivation: rp3ah7ihxcwlz5jv7ddy3kd5k0qsj657-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: 2sy90s0qjvq34lv3qxh5mcn6k5mivc30-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], [])