GitLab

e.output only includes stdout. Some errors are shown in stdout and
others in stderr, so print both.

Bug: 1111056
Change-Id: Ie83c070c726f62771eb6fc0750b60568f5dc0a48
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2366663
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Mohamed Heikal <mheikal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800583}