Merge pull request #164 from nhpupu/fix111

Redirect cargo build output to stderr

Author: Emilgardis

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+### Fixed
+
+- Redirected cargo build output to stderr instead of stdout. This prevents cargo/rustc messages and warnings from appearing in the stdout of cargo-binutils tools, making it easier to pipe or redirect tool output cleanly.
+
 ## [v0.4.0] - 2025-08-26
 
 ### Added

src/lib.rs

@@ -449,7 +449,7 @@ fn cargo_build(matches: &ArgMatches, metadata: &Metadata) -> Result<Option<Artif
             Message::CompilerMessage(msg) => {
                 if !quiet || verbose > 1 {
                     if let Some(rendered) = msg.message.rendered {
-                        print!("{rendered}");
+                        eprint!("{rendered}");
                     }
                 }
             }