serde_derive breaks module path

[figsoda]

serde_derive emits macro_rules! try, which doesn't parse with syn v2

minimum reproducible example

// src/lib.rs
#[derive(serde::Deserialize)]
struct A;

pub fn a() {}

cargo expand a

expected: pub fn a() {}

actual: everything gets printed because syn::parse_file fails here

cargo-expand/src/main.rs

Line 211 in a1f18db

if let Ok(mut syntax_tree) = syn::parse_file(&wip) {

[dtolnay]

Fixed in cargo-expand 1.0.42.