Yanking a crate better than deleting it

Those solutions seem to revolve around the same idea:

• In one case, crates are versioned by generation.major.minor.patch where generation is implicit in Cargo.toml and explicit in Cargo.lock.
• In the other case, crates are versioned by major.minor.patch and major acts as an approximation of generation. During crate deletion, the next generation is the next major version.