message: CI: disable CARGO_HOME caching, again
diff: @@ -6,7 +6,7 @@ set -u
  # create such directory and
  # copy recursively all the files from the newest dir which has $CI_JOB_NAME, if it exists
  -# caches are in /ci-cache/${CI_PROJECT_NAME}/${2}/${CI_COMMIT_REF_NAME}/${CI_JOB_NAME}
  +# cache lives in /ci-cache/${CI_PROJECT_NAME}/${2}/${CI_COMMIT_REF_NAME}/${CI_JOB_NAME}
  function prepopulate {
  if [[ ! -d $1 ]]; then
  @@ -24,8 +24,5 @@ function prepopulate {
  fi
  }
  -# CARGO_HOME cache was moved to the same "project/cache_type/branch_name/job_name" level as
  -# CARGO_TARGET_DIR because of frequent weird data-race issues. This just means that the same cache that
  -# would have been used for the entire pipeline will be duplicated for the each job.
  -prepopulate "$CARGO_HOME" cargo
  +# CARGO_HOME cache is still broken so would be handled some other way.
  prepopulate "$CARGO_TARGET_DIR" targets
  