[Confused User]

The issue ended up being not explicitly setting an output file and the download worked fine, thanks for the help.

In fact, I was able to remove the -W, -p, and -f switches. It works fine as -r -a -t -y -o.

But on the other hand, I don't think it was a case of "not reading what was in front of me". I really have no idea why I needed to explicitly set an output file. Without -o, the functionality should cause the stream data to be "written to stdout." according to the manual. There's nothing in the manual or elsewhere suggesting that this would trigger an error state, and the error message doesn't provide any useful diagnostic information that would suggest why it would fail one way and not the other.

Obviously I can still accomplish the same thing writing to a file and feeding that file into any postprocessing rather than dealing directly with the data being pumped into STDOUT, but again there's no indication that I should have to do it that way.