Crates published with invalid semver version

[Nemo157]

I was looking at data in the docs.rs database and noticed this crate: https://crates.io/crates/hxgm30-client, I believe the version it specifies (0.3.0-alpha.01) is invalid according to the semver standard. I'm not 100% certain of this though, so have opened semver/semver#563 to clarify.

[hbina]

I believe this is very common?

[Nemo157]

Not as far as I know, I don't have the data to hand anymore, but I believe this was the only crate I noticed with an invalid version in the docs.rs database (though, there could potentially be identical bugs in both the crates.io semver validator and pg-semver that result in them accepting the same superset of versions).

[steveklabnik]

There have been other crates published due to this kind of bug in semver; IMHO we should fix the bug in semver, but also crates.io doesn't need to remove; cargo knows how to parse some incorrect versions and warn about it.

[Turbo87]

this is blocked for now on dtolnay/semver#206 getting fixed

[jyn514]

dtolnay/semver#206 was fixed in semver 1.0.

[0xPoe]

Also, it has been upgraded in #3653.

[paolobarbolini]

Another example of this issue is with raft 0.5.0 specifying ~2.0-2.2 as the protobuf version

[Turbo87]

I guess we can close this issue as the original issue is fixed.

I'm not sure what to do about the raft comment above, but I guess we can track that in a dedicated issue, since it's related to a dependency requirement, and not a version number itself.