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swiftNightly BOT 9/18/2018 3:14 AM
exit status: 1 with stderr:<stdin>:3:1: error: global function 'foo' requires that 'Never' conform to 'Animal' foo(fatalError()) ^ <stdin>:2:6: note: where 'A' = 'Never' func foo<A: Animal>(_ a: @autoclosure () -> A) {} ^