Merge "Upgrade rust/crates/thiserror-impl to 1.0.20" am: 34a3122583 am: 033ae1ceeb am: 497884ee62 am: d258c35f02 am: 2f5566d8ef

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/thiserror-impl/+/1414399

Change-Id: Ia5756e94ce8a3467e39fb3873f195bd3b44be264