[autotest] Upgrade setuptools and make errors more visible
setuptools is too old, upgrade it to latest.
Allow _build_and_install to return a tuple of success, error_message.
Then build_externals can print the error at the end as well.
BUG=chromium:510143
TEST=local test
Change-Id: Ia750fd333e6d0d9d137a68b49fafc441094f07bc
Reviewed-on: https://chromium-review.googlesource.com/285646
Tested-by: Dan Shi <dshi@chromium.org>
Reviewed-by: Fang Deng <fdeng@chromium.org>
Commit-Queue: Fang Deng <fdeng@chromium.org>
2 files changed