[modules] Improve error messages.

test/message/message.status

Index: test/message/message.status
diff --git a/test/message/message.status b/test/message/message.status
index e4db83db09ca945e081043960ef823c2872c7519..c6c348747307d1ac72ac385cce161b521f5c4faa 100644
--- a/test/message/message.status
+++ b/test/message/message.status
@@ -31,5 +31,15 @@
   # escapes (we need to parse to distinguish octal escapes from valid
   # back-references).
   'strict-octal-regexp': [SKIP],
+
+  # Modules which are only meant to be imported from by other tests, not to be
+  # tested standalone.
+  'modules-skip*': [SKIP],
 }],  # ALWAYS
+
+['variant != ignition and variant != ignition_staging and variant != ignition_turbofan', {
+  # Ongoing implementation of modules.
+  # https://bugs.chromium.org/p/v8/issues/detail?id=1569
+  'modules-*': [SKIP],
+}],  # variant != ignition and variant != ignition_staging and variant != ignition_turbofan
 ]