Replace eprintln!() by error!()

examples/bench_index.rs

@@ -1,6 +1,9 @@
 extern crate electrs;
 extern crate error_chain;
 
+#[macro_use]
+extern crate log;
+
 use electrs::{config::Config,
               daemon::Daemon,
               errors::*,
@@ -42,6 +45,6 @@ fn run() -> Result<()> {
 
 fn main() {
     if let Err(e) = run() {
-        eprintln!("{}", e.display_chain());
+        error!("{}", e.display_chain());
     }
 }

examples/bench_parse.rs

@@ -37,6 +37,6 @@ fn run(config: Config) -> Result<()> {
 
 fn main() {
     if let Err(e) = run(Config::from_args()) {
-        eprintln!("{}", e.display_chain());
+        error!("{}", e.display_chain());
     }
 }

src/bin/electrs.rs

@@ -1,6 +1,9 @@
 extern crate electrs;
 extern crate error_chain;
 
+#[macro_use]
+extern crate log;
+
 use error_chain::ChainedError;
 use std::time::Duration;
 
@@ -48,6 +51,6 @@ fn run_server(config: &Config) -> Result<()> {
 fn main() {
     let config = Config::from_args();
     if let Err(e) = run_server(&config) {
-        eprintln!("server failed: {}", e.display_chain());
+        error!("server failed: {}", e.display_chain());
     }
 }