Swap out old log for shiny tracing

src/main.rs

@@ -1,6 +1,3 @@
-#[macro_use]
-extern crate log;
-
 use anyhow::Result;
 use clap::Clap;
 use dotenv::dotenv;
@@ -10,6 +7,8 @@ use serde::Serialize;
 use sqlx::postgres::PgPool;
 use std::convert::Infallible;
 use std::env;
+use tracing::info;
+use tracing_subscriber::fmt::format::FmtSpan;
 use url::Url;
 use warp::Filter;
 
@@ -53,10 +52,12 @@ struct ErrorMessage {
 #[tokio::main]
 async fn main() -> Result<()> {
     dotenv().ok();
-    if env::var_os("RUST_LOG").is_none() {
-        env::set_var("RUST_LOG", "shopkeeper=info");
-    }
-    pretty_env_logger::init();
+    let env_log_filter =
+        env::var("RUST_LOG").unwrap_or_else(|_| "warp=info,shopkeeper=info".to_owned());
+    tracing_subscriber::fmt()
+        .with_env_filter(env_log_filter)
+        .with_span_events(FmtSpan::CLOSE)
+        .init();
     let opts: Opts = Opts::parse();
 
     if opts.migrate {
@@ -96,7 +97,7 @@ async fn main() -> Result<()> {
         )
         .recover(problem::unpack_problem)
         .with(warp::compression::gzip())
-        .with(warp::log("shopkeeper"));
+        .with(warp::trace::request());
 
     let svc = warp::service(routes);
     let make_svc = hyper::service::make_service_fn(|_: _| {