Verbose print build_helper stdout

Author: jieyouxu

src/build_helper/src/git.rs

@@ -18,9 +18,10 @@ pub fn output_result(cmd: &mut Command) -> Result<String, String> {
     if !output.status.success() {
         return Err(format!(
             "command did not execute successfully: {:?}\n\
-             expected success, got: {}\n{}",
+             expected success, got: {}\n{}\n{}",
             cmd,
             output.status,
+            String::from_utf8(output.stdout).map_err(|err| format!("{err:?}"))?,
             String::from_utf8(output.stderr).map_err(|err| format!("{err:?}"))?
         ));
     }