OpenGL Warning not in mesa table
Solution 1:
I have recently dealt with exactly the same errormessage. I found that if I turned off 3d acceleration in VirtualBox everything worked properly (though not having 3d acceleration is not ideal, it would be great to find a solution that does not require disabling it).
Solution 2:
VirtualBox does not support OpenGL 3.0 or above at the moment, I had to migrate to VMware for that last week... I could be wrong but these warnings seems to be caused by that.