fn main() {
use tracing_subscriber::fmt;
use tracing_dedup::DeduplicatingFormatter;
tracing_subscriber::fmt()
.event_format(DeduplicatingFormatter::new(fmt::format::Format::default()))
.init();
tracing::info!("First message");
tracing::info!("First message");
tracing::info!("First message");
tracing::info!("Different message");
tracing::info!("Different message");
tracing::warn!("Warning message");
}