failed to load source for dependency `minetestworld`

Hello,

I just tried to build this, but get the following error:

[02:44:04][blindcoder@victoria:~/Projects/minehouse-worldmapper]$ cargo build --release
    Updating crates.io index
    Updating git repository `https://git.kanthaus.online/dorota/rust-minetestworld`
error: failed to get `minetestworld` as a dependency of package `minehouse-worldmapper v0.3.4 (/home/blindcoder/Projects/minehouse-worldmapper)`

Caused by:
  failed to load source for dependency `minetestworld`

Caused by:
  Unable to update https://git.kanthaus.online/dorota/rust-minetestworld?rev=0.6.0

Caused by:
  revspec '0.6.0' not found; class=Reference (4); code=NotFound (-3)

I can open git.kanthaus.online in a browser just fine, cloning the repo manually works fine as well.