With sharding, the useful links list is not particularly useful any more. For example, a recent "browser_tests failing on chromium.win/Win7 Tests (dbg)(1)" failure listed the following useful links:
Useful Links: shard #11 isolated out shard #12 isolated out shard #13 shard #14 shard #17 shard #19 isolated out shard #2 isolated out shard #0 isolated out shard #14 isolated out shard #12 shard #7 isolated out shard #9 isolated out shard #11 shard #16 (failed) shard #16 isolated out shard #18 shard #3 shard #5 shard #8 isolated out shard #1 isolated out shard #1 shard #19 shard #9 (failed) shard #0 shard #10 isolated out shard #13 isolated out shard #15 shard #17 isolated out shard #7 shard #10 shard #18 isolated out shard #2 shard #3 isolated out shard #4 isolated out shard #5 isolated out shard #6 shard #8 shard #15 isolated out shard #6 isolated out shard #4 (failed)