Pex/Pants PR status & review request: • upgrade Pex to 2.1.161 This is just a mechanical bump. • plumb through Pex's --check zipapp validation I think this is mostly straightforward and good to go. • stop swallowing warnings from Pex by default ready for a review, there is a deprecation here which isn't something I've done before. (The deprecation is of a field that I think "never" worked.) The next thing I hope to work on once those are in is using Pex's new lockfile binary args so that Pants and Pex agree on the inputs to the lockfile. This is pre-work for update/sync support.