message: Bump index cache version.
diff: @@ -692,8 +692,16 @@ impl Summaries {
  // * `2`: Added the "index format version" field so that if the index format
  // changes, different versions of cargo won't get confused reading each
  // other's caches.
  -
  -const CURRENT_CACHE_VERSION: u8 = 2;
  +// * `3`: Bumped the version to work around a issue where multiple versions of
  +// a package were published that differ only by semver metadata. For
  +// example, openssl-src 110.0.0 and 110.0.0+1.1.0f. Previously, the cache
  +// would be incorrectly populated with two entries, both 110.0.0. After
  +// this, the metadata will be correctly included. This isn't really a format
  +// change, just a version bump to clear the incorrect cache entries. Note:
  +// the index shouldn't allow these, but unfortunately crates.io doesn't
  +// check it.
  +
  +const CURRENT_CACHE_VERSION: u8 = 3;
  impl<'a> SummariesCache<'a> {
  fn parse(data: &'a [u8], last_index_update: &str) -> CargoResult<SummariesCache<'a>> {
  