"Function 'resolve_variant' is private" error when running on rust-analyzer itself

I'm using rust-analyzer while trying to make changes to rust-analyzer, and getting an error reported here: https://github.com/rust-lang/rust-analyzer/blob/cd413d0cac0a820d2b107ba92e77e1fb77bb2de6/crates/ide-diagnostics/src/handlers/no_such_field.rs#L60

function resolve_variant is private (E0624)

But Semantics::resolve_variant is public. rust-analyzer seems to think this line is actually calling SemanticsImpl::resolve_variant, which indeed is private. But it's accessible (or rather, would be if it were public) becase Semantics implements Deref<Target=SemanticsImpl> so that's confusing rust-analyzer I guess.

Tried making a minimal repro but I'm not getting the error here so maybe it only happens when you're accessing methods across a crate boundary or something. https://play.rust-lang.org/?version=stable&mode=debug&edition=2024&gist=a90984eb9d3bbabc1e0c570422e77388

Version 0.4.2477, Server Version 0.4.2477-standalone

Start with crates/ide-diagnostics/src/handlers/no_such_field.rs at the linked line, then compare the public Semantics::resolve_variant call with the private SemanticsImpl::resolve_variant reached through Deref. Try the linked Rust Playground reproduction and investigate whether the error depends on a crate boundary. Done means the reported call resolves correctly without E0624, with a regression test if the behavior can be reproduced.