pub fn resolve_all(&self) -> FeatureSet<'g> {
        FeatureSet {
            graph: DebugIgnore(*self),
            core: ResolveCore::all_nodes(self.dep_graph()),
        }
    }
Creates a new `FeatureSet` consisting of all members of this feature graph.

This will include features that aren't depended on by any workspace packages.

In most situations, `query_workspace().resolve()` is preferred. Use `resolve_all` if you
know you need parts of the graph that aren't accessible from the workspace.
guppy/src/graph/feature/resolve.rs