these 5 derivations will be built:
  /nix/store/q57l9nzbf7gfi180syzfmvvr1q0j2hg8-source.drv
  /nix/store/sp19pqi916r8jhn9l7qr7bkdrpjizzmb-workmux-0.1.281-vendor-staging.drv
  /nix/store/c7izr6qqizvpn2azm6kdp2s5bp0s2rc9-workmux-0.1.281-vendor.drv
  /nix/store/jzyjq08wxbwkmiahs5jkny4d737rrvkr-workmux-0.1.281.drv
  /nix/store/6bn0kw1p9cj5qjysy15bg1i9ssyn0bx5-check-workmux.drv