Function guest_rebound 

pub fn guest_rebound<'a>(
    mutated: impl IntoIterator<Item = &'a String>,
    path: &str,
) -> bool

Whether the guest may have rebound path, or a directory above it, in its file namespace: one of mutated (HostMutationRecord paths) is path or an ancestor of it. Detcore reports /, the ancestor of every absolute path, for a change whose path it could not establish. A path that is not absolute cannot be matched against those changes at all, so it counts as rebound too.