wip await gen

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/wdriver.rs b/wdriver.rs
index 17d507276cf049c8de6300023a58f3a601b2d6ae..0377a52f4796e56f4036ffabf5b82663c31e0bda 100644 (file)
--- a/wdriver.rs
+++ b/wdriver.rs
@@ -850,6 +850,7 @@ impl<'g> WindowGuard<'g> {
       then { gen }
       else { throw!(anyhow!("unexpected resp to synch {:?}", resp)) }
     };
+    trace!("{:?} gen={} ...", self, gen);
     (|| {
       loop {
         let tgen = self.su.driver.execute_async_script(