Include more information when json parsing fails

Include more information when json parsing fails

BUG=

Review-Url: https://codereview.chromium.org/2993643002
Committed: https://github.com/luci/luci-py/commit/82ffcaeb581f377c0b5059e934e81d28d5e8a800

[aludwin, 2017-08-03 18:37:18]

aludwin@google.com changed reviewers:
+ maruel@chromium.org, vadimsh@chromium.org

[aludwin, 2017-08-03 18:37:19]

Hi M-A, Vadim - is this a reasonable addition to try to catch the problem we're
seeing if it reoccurs in the future?

I haven't tested it yet; I can do minimal testing by simply uploading it to one
of my stacks, but if you'd like more intensive testing (ie finding out how to
fake an error) let me know. Thanks.

[M-A Ruel, 2017-08-03 21:43:17]

I'm not familiar with how long the rasterized error is but assuming it is not
totally insane, lgtm.

[aludwin, 2017-08-04 01:17:09]

The CQ bit was checked by aludwin@google.com

[commit-bot: I haz the power, 2017-08-04 01:17:15]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-08-04 01:20:08]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1501809429528420, "parent_rev":
"53d6666ee20d42e07ecec34d014def53fde50ac9", "commit_rev":
"82ffcaeb581f377c0b5059e934e81d28d5e8a800"}

[commit-bot: I haz the power, 2017-08-04 01:20:12]

Description was changed from

==========
Include more information when json parsing fails

BUG=
==========

to

==========
Include more information when json parsing fails

BUG=

Review-Url: https://codereview.chromium.org/2993643002
Committed:
https://github.com/luci/luci-py/commit/82ffcaeb581f377c0b5059e934e81d28d5e8a800
==========

[commit-bot: I haz the power, 2017-08-04 01:20:13]

Committed patchset #1 (id:1) as
https://github.com/luci/luci-py/commit/82ffcaeb581f377c0b5059e934e81d28d5e8a800