these 5 derivations will be built:
  /nix/store/68s4y2x2mw2mn614zs0nmfcwmkz8dxbm-source.drv
  /nix/store/y5yrv5bvxs25bdix2qwssvdzj0s2q7a3-vendor-registry.drv
  /nix/store/r5gfvkwsrpyh21wy4yv3q13p946x994s-vendor-cargo-deps.drv
  /nix/store/5vlc9gn4d8il4nn1znxnsbmmwjy9q15x-harmonia-deps-3.2.0.drv
  /nix/store/j6vln4fbffmkl9bkwkk4ljb0mqfrf47j-harmonia-llvm-cov-3.2.0.drv

post-build step Upload coverage to codecov: ok
/nix/store/v0fkg12ls466mc7hdamwqp71ypwm8sqb-codecov-upload: line 5: find: command not found
No coverage JSON found in /nix/store/4m5gvr7g5mp06fadk0bz90jsqs0p9phm-harmonia-llvm-cov-3.2.0