these 4 derivations will be built:
  /nix/store/7gr85f963wdls48ahf8inv4cjgxqbjbi-harmonia-llvm-cov-3.3.0.drv
  /nix/store/pi36qzg6yhssh3rfyqkqm3sk7avpgnla-harmonia-llvm-cov-3.3.0.drv
  /nix/store/rxizk1nnapnszd9psdlnd9a8b4fxkahx-harmonia-llvm-cov-3.3.0.drv
  /nix/store/0sibywahq2ydgfh4p7c40angqp535kzq-inputDerivation-upload-codecov-effect.drv
building '/nix/store/7gr85f963wdls48ahf8inv4cjgxqbjbi-harmonia-llvm-cov-3.3.0.drv'...
building '/nix/store/pi36qzg6yhssh3rfyqkqm3sk7avpgnla-harmonia-llvm-cov-3.3.0.drv'...
building '/nix/store/rxizk1nnapnszd9psdlnd9a8b4fxkahx-harmonia-llvm-cov-3.3.0.drv'...
building '/nix/store/0sibywahq2ydgfh4p7c40angqp535kzq-inputDerivation-upload-codecov-effect.drv'...