95729dcc73
Because python doesn't have lexical scope, loop variables persist after the loop is exited, set to the value of the last itteration ``` >>> i = 0 >>> for i in range(10): pass ... >>> i 9 ``` This causes the `ty` variable to be changed, causing unexpected crashes on ``` pub type RefFn<'a> = &'a dyn for<'b> Fn(&'a i32) -> i32; ```