After releasing enum-map 3.0.0-0.gat.0 #Rust crate I realized that a lot of tooling doesn't actually handle semver prerelease versions correctly if they don't have a string like "alpha", "beta", "dev", "pre" or "rc" in them. Just because #semver specification allows it doesn't mean that tools will actually support it.

At this point I'm not going to do anything about this particular release, but I will make sure to include "beta" in my future pre-release Rust crates.