commit 610a894a491b831e811983fd861fac2ef693ab1c
author Chih-Hung Hsieh <chh@google.com> Thu Oct 29 17:21:35 2020 -0700
committer Chih-hung Hsieh <chh@google.com> Mon Nov 02 21:49:31 2020 +0000
tree 4653266595083fad6018e689d02a53ad3e9f18e3
parent 9dadd5899dbc2a1a4261b957920015455926842b

Do not use Cargo.lock during cargo build.

* Save Cargo.lock before calling cargo, and restore it after the run.
* Use the --use-cargo-lock flag if the latest dependent crates failed
  to build the current crate. In this case, the published Cargo.lock
  will be used, but the generated .bp might not work with the other
  latest dependent crates in external/rust/crates.
* Fix one gpylint warning.

Bug: 172016745
Test: run through all external/rust/crates/*
Change-Id: I1874a706ac15b74c1dd5a606983b107284d9b28a