Print a debug message when QEMU was terminated by a signal on Unix

src/subcommand/runner.rs

@@ -73,6 +73,13 @@ pub(crate) fn runner(args: RunnerArgs) -> Result<i32, ErrorMessage> {
  return Err(ErrorMessage::from("Timed Out"));
  }
  Some(exit_status) => {
+ #[cfg(unix)]
+ if exit_status.code().is_none() {
+ use std::os::unix::process::ExitStatusExt;
+ if let Some(signal) = exit_status.signal() {
+ eprintln!("QEMU process was terminated by signal {}", signal);
+ }
+ }
  let qemu_exit_code = exit_status.code().ok_or("Failed to read QEMU exit code")?;
  match config.test_success_exit_code {
  Some(code) if qemu_exit_code == code => 0,