Just as a heads up, as of #17073, postfix completions/helpers are showing up first in VS Code. With a rust-analyzer built at c037130, these are the completions I'm getting:

With a rust-analyzer built at af72874, I'm getting the postfix completions first:

I'm not sure how intentional that is, but it certainly feels a bit like a bug to me.

Originally posted by @davidbarsky in #17073 (comment)