This is a followup to CL:2797935 to make it easier to debug exceptions.

Bug: 1206782
Change-Id: Ibb649e94fd562919737de152e3203ca6b02b38ad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2880843Reviewed-by: Josip Sokcevic <sokcevic@google.com>
Commit-Queue: Allen Webb <allenwebb@google.com>