These soft errors will become hard failures and block the proto module
to be marked PY2+3 in upstream recipe engine repo.


Bug: 1227140
Change-Id: I0e5fdebe7e7cf43552b525d63c12f82c96c49902
Recipe-Nontrivial-Roll: build_limited
Recipe-Nontrivial-Roll: chrome_release
Recipe-Nontrivial-Roll: infra
Recipe-Nontrivial-Roll: build
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3152784
Commit-Queue: Yuanjun Huang <yuanjunh@google.com>
Reviewed-by: Yiwei Zhang <yiwzhang@google.com>
Reviewed-by: Gavin Mak <gavinmak@google.com>