haystack-dump examples don't work

[dellis23]

I'm really keen to try this out, but I can't seem to get the examples working. Here's a few variations I've tried:

$ sudo haystack-dump 16873 output.dump
usage: memory_dumper [-h] [--compact] [--type TYPE] pid dumpname
memory_dumper: error: argument dumpname: invalid writeable value: 'output.dump'

$ sudo haystack-dump dump 16873 beaver.dump
usage: memory_dumper [-h] [--compact] [--type TYPE] pid dumpname
memory_dumper: error: argument pid: invalid int value: 'dump'

$ sudo haystack-dump 16873 dump output.dump
usage: memory_dumper [-h] [--compact] [--type TYPE] pid dumpname
memory_dumper: error: argument dumpname: invalid writeable value: 'dump'

$ sudo haystack-dump dump dumps/output.dump
usage: memory_dumper [-h] [--compact] [--type TYPE] pid dumpname
memory_dumper: error: argument pid: invalid int value: 'dump

[trolldbois]

The following should now work:
sudo haystack-dump 16873 output.dump

[dellis23]

Thanks!