Catch and log header parse errors

src/main.rs

@@ -57,7 +57,15 @@ fn main() {
             let path = entry.path();
             let f = File::open(path).unwrap();
             let mut read = BufReader::new(f);
-            let lines = parse::Language::RUST.read_header(&mut read).unwrap();
+
+            let lines = match parse::Language::RUST.read_header(&mut read) {
+                Ok(lines) => lines,
+                Err(err) => {
+                    eprintln!("error parsing {:?}: {:?}", path, err);
+                    continue;
+                }
+            };
+
             let header = parse::Header::parse(lines).unwrap();
 
             println!("{:?}: {:#?}", path, header);