Fix internal runner crash on binary files

src/worker/run/internal.rs

@@ -71,12 +71,20 @@ fn count(run: &RunInProgress, path: &Path) -> somehow::Result<Counts> {
         let mut lines = 0;
         let mut todos = 0;
         for line in BufReader::new(File::open(entry.path())?).lines() {
-            let line = line?;
+            match line {
+                Ok(line) => {
                     lines += 1;
                     if todo_regex.is_match(&line) {
                         todos += 1;
                     }
                 }
+                Err(_) => {
+                    // Probably a binary file
+                    lines = 0;
+                    todos = 0;
+                }
+            }
+        }
 
         counts.files += 1;
         counts.lines += lines;