Automatic code cleanup.

PiperOrigin-RevId: 217164810

src/java_tools/import_deps_checker/java/com/google/devtools/build/importdeps/ClassCache.java

diff --git a/src/java_tools/import_deps_checker/java/com/google/devtools/build/importdeps/ClassCache.java b/src/java_tools/import_deps_checker/java/com/google/devtools/build/importdeps/ClassCache.java
index 292d575..2355d3c 100644
--- a/src/java_tools/import_deps_checker/java/com/google/devtools/build/importdeps/ClassCache.java
+++ b/src/java_tools/import_deps_checker/java/com/google/devtools/build/importdeps/ClassCache.java
@@ -171,7 +171,7 @@
                   ResolutionFailureChain.createWithParent(classInfo, resolutionFailureChains));
         }
       } catch (IOException e) {
-        throw new RuntimeException("Error when resolving class entry " + entryName);
+        throw new RuntimeException("Error when resolving class entry " + entryName, e);
       } catch (RuntimeException e) {
         System.err.println(
             "A runtime exception occurred. The following is the content in the class index. "