--- FAIL: TestR889_EveryDiskPercentIsTheDFOne (0.05s)
    dfpercent_test.go:66: a disk percent divides by the whole filesystem (not df's used/(used+avail)) — use DFUsedPercent:
        ../../internal/system/mounts_linux.go:85: info.UsedPercent = float64(used) / float64(total) * 100
