#![feature(iter_sum)]
#![feature(iter_unfold)]
#![feature(libc)]
+#![feature(once_new)]
#![feature(path_ext)]
#![feature(path_ext)]
#![feature(path_relative_from)]
#![feature(rustc_diagnostic_macros)]
#![feature(rustc_private)]
#![feature(staged_api)]
-#![feature(std_misc)]
#![feature(unicode)]
#![feature(unicode)]
#![feature(vec_push_all)]