warning: field `0` is never read
--> test_suite/tests/regression/issue2846.rs:8:45
|
8 | pub struct S(#[serde(with = $with)] i32);
| - field in this struct ^^^
...
12 | declare_in_macro!("with");
| ------------------------- in this macro invocation
|
= help: consider removing this field
= note: `#[warn(dead_code)]` on by default
= note: this warning originates in the macro `declare_in_macro` (in Nightly builds, run with -Z macro-backtrace for more info)