tree 6be57770f3f8bc6e47eb4ceb3dab750c76965eb4
parent 0ffc24b85cf301212ed865db103537b5414fa789
author Roland McGrath <mcgrathr@google.com> 1545250005 -0800
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1545252681 +0000

[build_id_conv] Use non-racy mkdir

Two instances of the script running at the same time were racy in their
mkdir behavior.  Use os.makedirs and catch the EEXIST error rather than
using a racy precondition.  In newer versions of Python, os.makedirs
takes an optional exists_ok=True parameter for this, but we can't rely
on having a Python that new.

Test: CQ
Change-Id: I48c096ab29b6a3159a784413df0413fa259670f3