Comment # 3 on bug 86356 from Emil Velikov

The following messages while replaying the trace are due to the trimming:

Mesa: User error: GL_INVALID_OPERATION in glDeleteShader
XX: glDebugOutputCallback: High severity API error 2, GL_INVALID_OPERATION in
glDeleteShader
0 XX glDeleteShader(shader = YY)

Running against debug mesa (./configure --enable-debug ...) does not trigger
any asserts or produce extra output to stderr/stdout.