Failing on Windows X86 and Windows AMD64 with:

##TEST FAILED: the following unknown GC roots were found in heap dump:# ROOT 50000305 (kind=<unknown>)# ROOT 50000306 (kind=<unknown>)# ROOT 50000307 (kind=<unknown>)# ROOT 50000308 (kind=<unknown>)# ROOT 50000309 (kind=<unknown>)# ROOT 5000030a (kind=<unknown>)# ROOT 5000030b (kind=<unknown>)# ROOT 5000030c (kind=<unknown>)# ROOT 5000030d (kind=<unknown>)# ROOT 5000030e (kind=<unknown>)# ROOT 5000030a (kind=<unknown>)# ROOT 5000030b (kind=<unknown>)# ROOT 50000307 (kind=<unknown>)# ROOT 50000308 (kind=<unknown>)# ROOT 50000309 (kind=<unknown>)# ROOT 5000030d (kind=<unknown>)# ROOT 50000306 (kind=<unknown>)# ROOT 5000030c (kind=<unknown>)# ROOT 5000030e (kind=<unknown>)# ROOT 50000114 (kind=<unknown>)# ROOT 50000115 (kind=<unknown>)# ROOT 50000116 (kind=<unknown>)# ROOT 50000117 (kind=<unknown>)# ROOT 50000118 (kind=<unknown>)# ROOT 50000119 (kind=<unknown>)# ROOT 5000011a (kind=<unknown>)# ROOT 5000011b (kind=<unknown>)# ROOT 50000114 (kind=<unknown>)# ROOT 50000116 (kind=<unknown>)# ROOT 5000011a (kind=<unknown>)# ROOT 5000011b (kind=<unknown>)# ROOT 50000115 (kind=<unknown>)# ROOT 50000118 (kind=<unknown>)# ROOT 50000117 (kind=<unknown>)# ROOT 50000119 (kind=<unknown>)# ROOT 50000314 (kind=<unknown>)# ROOT 50000315 (kind=<unknown>)# ROOT 50000316 (kind=<unknown>)# ROOT 50000317 (kind=<unknown>)# ROOT 50000318 (kind=<unknown>)# ROOT 50000319 (kind=<unknown>)# ROOT 5000031a (kind=<unknown>)# ROOT 5000031b (kind=<unknown>)# ROOT 5000031c (kind=<unknown>)# ROOT 5000031d (kind=<unknown>)# ROOT 5000031e (kind=<unknown>)# ROOT 5000031f (kind=<unknown>)

Probably has recently been brought back into the testing lists.