System Information
Operating system and graphics card
Windows 10 pro 64bit
gtx 970 x 1, Intel 3930k, 16G ram
Blender Version
Broken: (example: 2.69.7 4b206af, see splash screen): blender-2.78.0-git.0021268-windows64
Worked: (optional) : blender-2.78.0-git.rB82bcfb9b342a-windows64
Short description of error
thin stripe of {F625400}black artifact with denoise enabled with test build
Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps