Remove near-duplicate timeout message

src/process.rs

@@ -101,10 +101,7 @@ impl Process {
     pub fn poll(&mut self) -> Result<Option<ProcessStatus>> {
         let elapsed = self.start.elapsed();
         if elapsed > self.timeout {
-            info!(
-                "timeout after {:.1}s, terminating child process...",
-                elapsed.as_secs_f32()
-            );
+            debug!(?elapsed, "timeout, terminating child process...",);
             self.terminate()?;
             Ok(Some(ProcessStatus::Timeout))
         } else if let Err(e) = check_interrupted() {

tests/cli/main.rs

@@ -1008,7 +1008,6 @@ fn timeout_when_unmutated_tree_test_hangs() {
         .assert()
         .code(4) // exit_code::CLEAN_TESTS_FAILED
         .stdout(is_match(r"TIMEOUT *Unmutated baseline in \d+\.\ds").unwrap())
-        .stderr(contains("timeout"))
         .stderr(contains(
             "cargo test failed in an unmutated tree, so no mutants were tested",
         ));