diff -u ./src/tools/tidy/src/features.rs ../rustc-1.33.0-src/src/tools/tidy/src/features.rs
--- ../rustc-1.33.0-src/src/tools/tidy/src/features.rs	2019-02-28 21:53:35.000000000 +1300
+++ ./src/tools/tidy/src/features.rs	2019-03-04 21:10:20.854805497 +1300
@@ -188,7 +188,7 @@
             }
 
             let mut parts = line.split(',');
-            let level = match parts.next().map(|l| l.trim().trim_left_matches('(')) {
+            let level = match parts.next().map(|l| l.trim().trim_start_matches('(')) {
                 Some("active") => Status::Unstable,
                 Some("removed") => Status::Removed,
                 Some("accepted") => Status::Stable,