Gracefully handle tests that print.

lib/src/runner/reporter/no_io_compact.dart

Index: lib/src/runner/reporter/no_io_compact.dart
diff --git a/lib/src/runner/reporter/no_io_compact.dart b/lib/src/runner/reporter/no_io_compact.dart
index 91dae81d41f7f4dedcc19bfa5b27abf1e5410114..3afef34af80b638f2a0ca25e0570a596df5150dc 100644
--- a/lib/src/runner/reporter/no_io_compact.dart
+++ b/lib/src/runner/reporter/no_io_compact.dart
@@ -94,6 +94,11 @@ class NoIoCompactReporter {
         print(indent(error.error.toString()));
         print(indent(terseChain(error.stackTrace).toString()));
       });
+
+      liveTest.onPrint.listen((line) {
+        _progressLine(_description(liveTest));
+        print(line);
+      });
     });
   }