Continuing.

Program received signal SIGSEGV, Segmentation fault.
__glXGetDrawable (glxc=0x0, drawId=56631034, client=0xcd8800, 
    error=0x7fff8248238c) at ../../glx/glxcmds.c:503
503	../../glx/glxcmds.c: No such file or directory.
	in ../../glx/glxcmds.c
#0  __glXGetDrawable (glxc=0x0, drawId=56631034, client=0xcd8800, 
    error=0x7fff8248238c) at ../../glx/glxcmds.c:503
        pDraw = 0x1420e70
        pGlxDraw = <value optimized out>
        rc = 0
#1  0x00007f05ce8bd3c4 in __glXDisp_SwapBuffers (cl=<value optimized out>, 
    pc=<value optimized out>) at ../../glx/glxcmds.c:1480
        client = 0xcd8800
        tag = 0
        drawId = 56631034
        glxc = 0x0
        pGlxDraw = <value optimized out>
        error = <value optimized out>
#2  0x00007f05ce8c0640 in __glXDispatch (client=0xcd8800)
    at ../../glx/glxext.c:578
        stuff = 0x22b8560
        opcode = <value optimized out>
        cl = 0xcd8a10
        retval = <value optimized out>
#3  0x0000000000431604 in Dispatch () at ../../dix/dispatch.c:439
        result = <value optimized out>
        client = 0xcd8800
        nready = 0
        start_tick = 280
#4  0x0000000000425c35 in main (argc=12, argv=0x7dadc8, 
    envp=<value optimized out>) at ../../dix/main.c:283
        i = 1
        alwaysCheckForInput = {0, 1}