Do not add src/ to sysroot crates' paths, they already have it now.

eddyb · eddyb · commit d5d2f98d6f76 · 2018-11-24T10:34:07.000+02:00
diff --git a/src/loader.rs b/src/loader.rs
@@ -99,8 +99,7 @@ impl AnalysisLoader for CargoAnalysisLoader {
             .join("lib")
             .join("rustlib")
             .join("src")
-            .join("rust")
-            .join("src");
+            .join("rust");
 
         vec![
             SearchDirectory::new(libs_path, Some(src_path)),
