Sorry about that, broken links have been fixed in the episode and here's a link to the library: https://github.com/pointfreeco/swift-parsing.
$ youtube-dl https://www.pointfree.co/episodes/ep185-tour-of-parser-printers-introduction -f http-720p
[generic] ep185-tour-of-parser-printers-introduction: Requesting header
[snip]
zlib.error: Error -5 while decompressing data: incomplete or truncated stream
$ wget --method=HEAD https://www.pointfree.co/episodes/ep185-tour-of-parser-printers-introduction
[snip]
HTTP request sent, awaiting response... 404 Not Found