1 warning: struct is never constructed: `S`
2 --> $DIR/macro-span-replacement.rs:7:14
8 | ------------- in this macro invocation
10 note: the lint level is defined here
11 --> $DIR/macro-span-replacement.rs:3:9
15 = note: `#[warn(dead_code)]` implied by `#[warn(unused)]`
16 = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
18 warning: 1 warning emitted