Take sys/vxworks/args from sys/unix instead.

Author: m-ou-se

library/std/src/sys/unix/args.rs

@@ -70,7 +70,8 @@ impl DoubleEndedIterator for Args {
     target_os = "haiku",
     target_os = "l4re",
     target_os = "fuchsia",
-    target_os = "redox"
+    target_os = "redox",
+    target_os = "vxworks"
 ))]
 mod imp {
     use super::Args;

library/std/src/sys/vxworks/args.rs

@@ -13,6 +13,7 @@ pub mod weak;
 
 #[path = "../unix/alloc.rs"]
 pub mod alloc;
+#[path = "../unix/args.rs"]
 pub mod args;
 pub mod cmath;
 #[path = "../unix/condvar.rs"]