Fix the progress bar in the UI; now the line-rewriting more or less

works! #523

abstio/src/download.rs

@@ -8,6 +8,7 @@ use abstutil::prettyprint_usize;
 /// tokio runtime somewhere.
 pub async fn download_bytes<I: AsRef<str>>(url: I, quiet: bool) -> Result<Vec<u8>> {
     let url = url.as_ref();
+    info!("Downloading {}", url);
     let mut resp = reqwest::get(url).await.unwrap();
     resp.error_for_status_ref()
         .with_context(|| format!("downloading {}", url))?;

map_gui/src/tools/command.rs

@@ -91,7 +91,7 @@ impl<A: AppLike + 'static> RunCommand<A> {
                 }
                 // Handle the "clear the current line" escape code
                 if line.contains("\r") {
-                    self.lines.pop_front();
+                    self.lines.pop_back();
                     self.lines
                         .push_back(line.split('\r').last().unwrap().to_string());
                 } else {