src/test/ui/feature-gates/feature-gate-closure_lifetime_binder.rs


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fn main() {
    for<> || -> () {};
    //~^ ERROR `for<...>` binders for closures are experimental
    for<'a> || -> () {};
    //~^ ERROR `for<...>` binders for closures are experimental
    for<'a, 'b> |_: &'a ()| -> () {};
    //~^ ERROR `for<...>` binders for closures are experimental
}