With every playground that runs in Xcode 7.0 beta 5, the following three errors display in the debug area:
Aug 6 13:11:50 Tour1[17353] <Error>: CGContextSaveGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
Aug 6 13:11:50 Tour1[17353] <Error>: CGContextTranslateCTM: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
Aug 6 13:11:50 Tour1[17353] <Error>: CGContextRestoreGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
How do I fix this? How do I set the environmental variables and what do I set them to?