[Autoroller] Logging to diagnose dry-run early exit
[Autoroller] Logging to diagnose dry-run early exit

Bug: skia:10563
Change-Id: Ic1c8981054594eda371cb88dc0f6973901f48695
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/312306
Reviewed-by: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>
Commit-Queue: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot