Result of leveneTest: car's table.
["Df", "F value", "Pr(>F)"].
["Df", "F value", "Pr(>F)"]
["group", ""] (the second row is the residuals).
["group", ""]
One array per row; NaN where car prints nothing.
R's warnings, each once, in R's order (an empty array when there are none).
Result of leveneTest: car's table.