I have some troubles enabling format on save for Rust on vs code.
My vs code settings.json looks like this:

{
    "editor.formatOnSave": true,
    "[rust]": {
        "editor.defaultFormatter": "rust-lang.rust-analyzer",
    }
}

However when I save a rust file the document is not formatted.
I have properly installed the rust-lang.rust-analyzer extension and strangely enough if I run the command “format ducoment” by hand it works. Any idea?

Does the “format document” command I run by hand always use the default formatter?