What is the test for determining whether a sentence is too lenient?

"We review the reasonableness of a district court's sentence under a deferential abuse of discretion standard." United States v. Hernandez, 604 F.3d 48, 52 (2d Cir. 2010). This review "encompasses two components: procedural review and substantive review." United States v. Cavera, 550 F.3d 180, 189 (2d Cir. 2008) (en banc). A district court commits procedural error when it fails to properly calculate the guideline range or rests its finding on a clearly erroneous finding of fact. Id. at 190.