print local testnet log as println and errors as eprintln (#15005)

crates/aptos/CHANGELOG.md

@@ -6,6 +6,7 @@ All notable changes to the Aptos CLI will be captured in this file. This project
 - `aptos move fmt` formats move files inside the `tests` and `examples` directory of a package.
 - Add `aptos update prover-dependencies`, which installs the dependency of Move prover, boogie, z3 and cvc5.
 - Update the default version of `movefmt` to be installed from 1.0.4 to 1.0.5
+- Update the local-testnet logs to use `println` for regular output and reserve `eprintln` for errors.
 
 ## [4.2.3] - 2024/09/20
 - Fix the broken indexer in localnet in 4.2.2, which migrates table info from sycn to async ways.

crates/aptos/src/node/local_testnet/docker.rs

@@ -30,7 +30,8 @@ pub const CONTAINER_NETWORK_NAME: &str = "aptos-local-testnet-network";
 /// there no second location, there is just the one named pipe.
 pub async fn get_docker() -> Result<Docker> {
     let docker = Docker::connect_with_local_defaults()
-        .context(format!("{} (init_default)", ERROR_MESSAGE))?;
+        .context(format!("{} (init_default)", ERROR_MESSAGE))
+        .inspect_err(|e| eprintln!("{:#}", e))?;
 
     // We have to specify the type because the compiler can't figure out the error
     // in the case where the system is Unix.

crates/aptos/src/node/local_testnet/mod.rs

@@ -135,14 +135,14 @@ impl RunLocalnet {
                 HealthChecker::IndexerApiMetadata(_) => continue,
             };
             if !silent {
-                eprintln!("{} is starting, please wait...", health_checker);
+                println!("{} is starting, please wait...", health_checker);
             } else {
                 info!("[silent] {} is starting, please wait...", health_checker);
             }
             let fut = async move {
                 health_checker.wait(None).await?;
                 if !silent {
-                    eprintln!(
+                    println!(
                         "{} is ready. Endpoint: {}",
                         health_checker,
                         health_checker.address_str()
@@ -337,7 +337,7 @@ impl CliCommand<()> for RunLocalnet {
             })?;
         }
 
-        eprintln!(
+        println!(
             "\nReadiness endpoint: http://{}:{}/\n",
             bind_to, self.ready_server_args.ready_server_listen_port,
         );