error: internal compiler error: compiler/rustc_middle/src/ty/normalize_erasing_regions.rs:LL:CC: Failed to normalize <for<'a, 'b> fn(&'a Alias<'b>) {foo} as std::ops::FnOnce<(&&S,)>>::Output, maybe try to call `try_normalize_erasing_regions` instead

query stack during panic:
#0 [eval_to_allocation_raw] const-evaluating + checking `BAR`
#1 [eval_to_const_value_raw] simplifying constant for the type system `BAR`
end of query stack
error: aborting due to previous error