#6242 Crash when removing a procedural node

#6254 trace_set: crash when destroying shader

#6255 sss_irradiance_shader fails with closure-based shaders

#6286 Volume shader: crash when connected as atmosphere shader

#6288 Miscellaneous crashes (empty nurbs, empty implicit, atmosphere shadow_matte)

#6292 Deep Driver: write errors hang the render

#6293 Deep driver: append does not work with overscan renders

#6294 Bucket call back: user bucket coords should be snapped to bucket grid

#6295 Crash when saving empty ginstance with open_procs enabled

#6297 Camera differential evaluation can cause crashes or hangs with OSL shaders linked to camera

#6258 Range shader can sometimes ouput infinite or nan