`go build -out-dir $(pwd)` will delete your working directory

Right now the first step in the build process is to delete everything in whatever directory you give it for an output directory, this is probably a footgun:

https://github.com/adhocteam/pushup/blob/7b9ec07d4ce06d3cf9fc9fc3d2e0bca92856ee2c/main.go#L303

Is there any reason to delete files other than ones that conflict with what pushup is building?