What is the test for an Eighth Amendment claim that a prison official has deprived inmates of humane conditions of confinement?

An Eighth Amendment claim that a prison official has deprived inmates of humane conditions of confinement must meet two requirements, one objective and one subjective. Farmer v. Brennan, 114 S.Ct. 1970, 1977 (1994). Under the objective requirement, the prison official's acts or omissions must deprive an inmate of "the minimal civilized measure of life's necessities." Id. The subjective requirement, relating to the defendant's state of mind, requires deliberate indifference. Id.