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Without thinking about it much, my understanding was that each line of the stack trace referred to a real line, even though the block as a whole wasn’t a program.
But! because of this comment I went and checked the lines of those stack traces. And in fact, they’re not real lines, just the C++ type expansion.
That said I’ve got a another half as bad example that is real so Ive edited the comment to point to that example instead.
(I know I’m two months late)
To back up what you’re saying, I work with ML, and the guy next to me does ML for traffic signal controllers. He basically established the benchmark for traffic signal simulators for reinforcement learning.
Nothing works. All of the cutting edge reinforment algorithms, all the existing publications, some of which train for months, all perform worse than “fixed policy” controllers. The issue isn’t the brains of the system, its the fact that stoplights are fricken blind to what is happing.