set default level info and log seed at startup

simulator/generation/plan.rs

@@ -482,7 +482,6 @@ impl Interaction {
     pub(crate) fn execute_query(&self, conn: &mut Rc<Connection>, io: &SimulatorIO) -> ResultSet {
         if let Self::Query(query) = self {
             let query_str = query.to_string();
-            tracing::info!("executing: {}", query_str);
             let rows = conn.query(&query_str);
             if rows.is_err() {
                 let err = rows.err();

simulator/main.rs

@@ -564,6 +564,7 @@ fn setup_simulation(
 ) -> (u64, SimulatorEnv, Vec<InteractionPlan>) {
     if let Some(seed) = &cli_opts.load {
         let seed = seed.parse::<u64>().expect("seed should be a number");
+        tracing::info!("seed={}", seed);
         let bug = bugbase
             .get_bug(seed)
             .unwrap_or_else(|| panic!("bug '{}' not found in bug base", seed));
@@ -660,7 +661,7 @@ fn init_logger() {
                 .without_time()
                 .with_thread_ids(false),
         )
-        .with(EnvFilter::from_default_env())
+        .with(EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info")))
         .try_init();
 }