cleans up lifetimes and ownership

flight/src/logger.rs

@@ -2,7 +2,7 @@ use anyhow::Result;
 use std::env;
 use std::fs::create_dir_all;
 use std::str::FromStr;
-use log::trace;
+use log::debug;
 
 pub fn setup_logger() -> Result<()> {
     let log_file = env::var("LOG_FILE").or_else(|_| {
@@ -37,6 +37,6 @@ pub fn setup_logger() -> Result<()> {
         .chain(fern::log_file(log_file.clone())?)
         .apply()?;
 
-    trace!("Logging to {} at level {}", log_file, log_level);
+    debug!("Logging to {} at level {}", log_file, log_level);
     Ok(())
 }