This is blocked on #26870
I am willing to mentor this if someone else wants to do it.
Note that re-exporting HashMap may be the trickiest one; it's not clear to me that it's trivial, and may involve manually re-exporting everything in std::collections::hash_map to get the right behaviour (annoying and potentially fragile).
This is blocked on #26870
pub type HashMap<K, V, S = RandomState> = core_collections::HashMap<K, V, S>I am willing to mentor this if someone else wants to do it.
Note that re-exporting HashMap may be the trickiest one; it's not clear to me that it's trivial, and may involve manually re-exporting everything in std::collections::hash_map to get the right behaviour (annoying and potentially fragile).