Tolerate broken kapt stubs

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=272957216

java/com/google/turbine/binder/DisambiguateTypeAnnotations.java

@@ -278,8 +278,12 @@ public static ImmutableList<AnnoInfo> groupRepeated(
         for (AnnoInfo element : infos) {
           elements.add(new TurbineAnnotationValue(element));
         }
-        ClassSymbol container = env.get(symbol).annotationMetadata().repeatable();
+        TypeBoundClass info = env.get(symbol);
+        ClassSymbol container = info.annotationMetadata().repeatable();
         if (container == null) {
+          if (isKotlinRepeatable(info)) {
+            continue;
+          }
           AnnoInfo anno = infos.iterator().next();
           throw TurbineError.format(
               anno.source(), anno.position(), ErrorKind.NONREPEATABLE_ANNOTATION, symbol);
@@ -296,4 +300,17 @@ public static ImmutableList<AnnoInfo> groupRepeated(
     }
     return result.build();
   }
+
+  // Work-around for https://youtrack.jetbrains.net/issue/KT-34189.
+  // Kotlin stubs include repeated annotations that are valid in Kotlin (i.e. meta-annotated with
+  // @kotlin.annotation.Repeatable), even though they are invalid Java.
+  // TODO(b/142002426): kill this with fire
+  static boolean isKotlinRepeatable(TypeBoundClass info) {
+    for (AnnoInfo metaAnno : info.annotations()) {
+      if (metaAnno.sym().binaryName().equals("kotlin/annotation/Repeatable")) {
+        return true;
+      }
+    }
+    return false;
+  }
 }