No, the standard library doesn't contain many of the things that Haskell's does because it's not Haskell, and people haven't really been asking for them like they have a variety of other things. And the reason people don't use them widely is that there's often better designs than passing around closures - lifetimes make useful mutation of closures' environments difficult, Rust largely revolves around mutation, so it's more common to invert the control flow (have functions return a command and interpret it, possibly in a loop, rather than have them take a closure) except in certain self-contained situations. That doesn't change the existence of HOFs.
