these 3 derivations will be built:
  /nix/store/6mcsdrqcsj9wzpwrv0xsdgs81mch669h-iets-fuzz-diff-0.0.0.drv
  /nix/store/y3l2rrccjyb4jrrssq4lxnp9amaf9l0z-iets-fuzzers-0.0.0.drv
  /nix/store/81km50b3dqprq21j2s64jyk4djdr2yvr-iets-fuzz-parse-check.drv
building '/nix/store/81km50b3dqprq21j2s64jyk4djdr2yvr-iets-fuzz-parse-check.drv'