- Silence errors and do not create error annotations, fixes#144
- Implement cleanup for new sparse registry
- Do not clean `-sys` dependencies from `registry/src`, hopefully fixes #150
Ensure consistency of main and post configuration by storing and
restoring it from state, which in turn ensures cache key stability.
Also:
* Fixed some typos.
* Use core.error for logging errors.
* Fix inverted condition on cache-all-crates.
Reverts: #138Fixes#140