createFileLink(Untracked) overwrites existing files/symlinks #16370
Without this behavior, build rules may throw an exception when being rerun. This is also justified as it matches the overwrite behavior of e.g. Shake's copyFile' funciton.
Without this behavior, build rules may throw an exception when being rerun. This is also justified as it matches the overwrite behavior of e.g. Shake's copyFile' funciton.