I published a new version of a crate today, and noticed that the download chart shows lots of downloads for the new version already — it even shows downloads from last week when the version wasn't published
The crate is version-sync and the new version is 0.8.1. Here is how the download chart looks like right now:
It looks like a frontend bug, the data being returned from the API only has the 6 downloads on 2019-04-03 for the latest version along with counts for other versions in the history. Looking at another crate at random https://crates.io/crates/rand seems to have a similar issue where it's attributing all the downloads to version 0.6.3.