The diff appears to be a garbled string: -Received loadstart event +Receiv
Not sure why the description got truncated. Here's the full write-up: The diff appears to be a garbled string: -Received loadstart event +Receiv
The reason why the comment string kept getting truncated is because it had \0s in it. Here's comment with the \0s escaped: The diff appears to be a garbled string: -Received loadstart event +Receiv\0\0\0\0oadstart event Or: -Received loadstart even +\0\0\0\0ived loadstart event This appears to have been happening for at least a couple of days (at least as of r66830).
+Jian since this test was added recently (r66461), so it was probably flaky from the start. The extra nulls in the strings are worrisome.
http://trac.webkit.org/browser/trunk/LayoutTests/fast/files/workers/worker-read-blob-async.html Added in http://trac.webkit.org/changeset/66461
It seems that the message posted from worker thread to main thread is garbaged occasionally. I am looking into this. Here is one build that had this error: http://build.webkit.org/results/Leopard%20Intel%20Debug%20(Tests)/r67057%20(19947)/results.html