copying path '/nix/store/kcgrhjkl69kzw5cgklpd64ni33w59r8h-perl-5.42.0' from 'https://cache.nixos.org'...
copying path '/nix/store/bigmr05j0n316ndvs905ywdyjyzv8a7s-sqlite-3.51.1' from 'https://cache.nixos.org'...
copying path '/nix/store/hpxnf0bm48ww1nfk9ihaa8q4ki1iwk9z-xar-minimal-501-lib' from 'https://cache.nixos.org'...
copying path '/nix/store/8kk3132f2d0vhyhjd0wnahz7rlx0aic8-xcbuild-0.1.1-unstable-2019-11-20' from 'https://cache.nixos.org'...
copying path '/nix/store/az3dx2yc5hz4p0kkp4yyd7jxxzi1v0ir-zlib-1.3.1-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/10zydyns7yzxpm8a6i7mi4xlj1mjcfym-xar-minimal-501' from 'https://cache.nixos.org'...
copying path '/nix/store/jmd4qllha9424zfa0jq2hgs7kzik3c8f-zlib-1.3.1-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/6hvqqgbsi756nn9igy7i9dxw83nsyw6r-bootstrap-stage2-stdenv-darwin' from 'https://cache.nixos.org'...
copying path '/nix/store/1n8cqm88z0xxif6m97v4ngjp0nphizgp-xar-minimal-501-dev' from 'https://cache.nixos.org'...
error: a 'x86_64-linux' with features {} is required to build '/nix/store/m7xcdjw8wjrckh3cd6mgjh6b2nhw9v6d-perl-5.42.0.drv', but I am a 'x86_64-darwin' with features {apple-virt, benchmark, big-parallel, nixos-test}