/*
TEST_OUTPUT:
---
-fail_compilation/ice15441.d(24): Error: variable ice15441.main.__front$n$ type void is inferred from initializer __r$n$.front(), and variables cannot be of type void
-fail_compilation/ice15441.d(24): Error: expression __r$n$.front() is void and has no value
-fail_compilation/ice15441.d(24): Error: `s1.front` is void and has no value
-fail_compilation/ice15441.d(27): Error: cannot infer argument types, expected 1 argument, not 2
+fail_compilation/ice15441.d(22): Error: `s1.front` is `void` and has no value
+fail_compilation/ice15441.d(25): Error: cannot infer argument types, expected 1 argument, not 2
---
*/