tree 62038541b01f1d685f588675074adbc921a4c8c2
parent dce028c50f760e5981cf004dc65f3bc06924c704
author Rob Mohr <mohrr@google.com> 1591987361 -0700
committer CQ Bot Account <commit-bot@chromium.org> 1592243492 +0000

Roll back rust

The env-setup-builder-mac last worked with this Rust version. I've also
paused the rust roller.

https://ci.chromium.org/p/pigweed/builders/ci/env-setup-builder-mac?limit=200

Change-Id: I73af045252d9b2bfdcd45e3cac1e5e8b7f864458