]add Plots and ]test Plots in a clean Julia install still does not work (checked it in a clean Docker). I think this is because https://github.com/JuliaRegistries/General/pull/227 does not change StatsPlots’s compat info. Since StatsPlots does not claim any compat information for StatsBase, I believe the correct behavior is to let it be installed even though the test may fail. I wrote a more detailed explanation for why I thought this was the correct behavior in Dependency problem with FIllArrays - #41 by tkf.