Upgrade log to 0.4.21 & adapt warn macro

Author: jburnett

cli/Cargo.toml

@@ -11,7 +11,7 @@ edition.workspace = true
 
 
 [dependencies]
-log = "0.4.20"
+log = "0.4.21"
 pest = "2.7.3"
 pretty_env_logger = "0.5.0"
 pta-ledger = { path = "../pta-ledger" }

cli/src/main.rs

@@ -7,7 +7,7 @@ extern crate pta_ledger;
 extern crate pta_parser;
 
 
-use log::{info, warn, as_error, error};
+use log::{info, warn, error};
 
 // TODO: how to isolate pest so clients can just use lib (w/o requiring pest as here)
 use pta_ledger::ledger_builder::LedgerBuilder;
@@ -45,7 +45,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         }
 
         Err(e) => {
-            warn!(err = as_error!(e); "failed to read file as string");
+            warn!("failed to read file as string; {e}");
             return Err(Box::new(e));
         }
     }