Add verbose_failures flag to bazel invocation

Change-Id: I8a18c441cedffbf3cfba83768052c17d0573ffa8
diff --git a/tools/archive_desugar_jdk_libs.py b/tools/archive_desugar_jdk_libs.py
index fa90c5a..4ee7387 100755
--- a/tools/archive_desugar_jdk_libs.py
+++ b/tools/archive_desugar_jdk_libs.py
@@ -107,6 +107,7 @@
         '--bazelrc=/dev/null',
         'build',
         '--sandbox_debug',
+        '--verbose_failures',
         'maven_release' + ('_jdk11' if variant == 'jdk11' else '')]
     utils.PrintCmd(cmd)
     subprocess.check_call(cmd, env=GetJavaEnv())