New failure in run-javascriptcore-tests: ** The following Mozilla test failures have been introduced: ecma/Date/15.9.5.31-1.js This is happening on both 64-bit and 32-bit platforms, and in Debug and Release builds.
I'm not sure if it is a new failure, because ecma/Date/15.9.5.31-1.js was skipped long long time ago and was unskipped by https://trac.webkit.org/changeset/173116, because the comment said it is a Linux only failure. But it seems it still fails on Windows for some reason and was skipped again by https://trac.webkit.org/changeset/173637
After https://trac.webkit.org/changeset/173656 and https://trac.webkit.org/changeset/173657 we can skip tests on Windows and non-Windows platforms independently.