Can you use the old borrowck in a 2018 crate?
No, you can't select the borrowck in use.
/me wonders if -Z borrowck=ast works under 2018
(its slated to be removed, in any case...)
@pnkfelix I guess @Zoxc wants to declare that one crate uses the old borrowck regardless what's the main borrowck in use
and as @Florian Gilcher have said that's not possible
maybe my guessing is wrong :)
sure, I was just thinking out loud
I wasn't sure if @Zoxc just wanted to try to throw some random code in a crate at the old borrowck
without first revising it to fit 2015 edition requirements
(of course I wouldn't be suprised if one encountered ICE's in such an attempt to shoehorn AST borrowck into a 2018 edition context.)