Update UI tests

Author: Sa4dUs

tests/ui/autodiff/visibility.rs

@@ -6,12 +6,11 @@
 #![feature(autodiff)]
 
 #[cfg(std_autodiff)]
-use std::autodiff::autodiff;
-
+use std::autodiff::autodiff_forward;
 extern crate my_macro;
-use my_macro::autodiff; // bring `autodiff` in scope
+use my_macro::autodiff_forward; // bring `autodiff` in scope
 
-#[autodiff]
+#[autodiff_forward]
 //[std_autodiff]~^^^ ERROR the name `autodiff` is defined multiple times
 //[std_autodiff]~^^ ERROR this rustc version does not support autodiff
 fn foo() {}

tests/ui/autodiff/visibility.std_autodiff.stderr

@@ -1,23 +1,23 @@
-error[E0252]: the name `autodiff` is defined multiple times
+error[E0252]: the name `autodiff_forward` is defined multiple times
   --> $DIR/visibility.rs:12:5
    |
-LL | use std::autodiff::autodiff;
-   |     ----------------------- previous import of the macro `autodiff` here
+LL | use std::autodiff::autodiff_forward;
+   |     ------------------------------- previous import of the macro `autodiff` here
 ...
-LL | use my_macro::autodiff; // bring `autodiff` in scope
-   |     ^^^^^^^^^^^^^^^^^^ `autodiff` reimported here
+LL | use my_macro::autodiff_forward; // bring `autodiff` in scope
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ `autodiff` reimported here
    |
-   = note: `autodiff` must be defined only once in the macro namespace of this module
+   = note: `autodiff_forward` must be defined only once in the macro namespace of this module
 help: you can use `as` to change the binding name of the import
    |
-LL | use my_macro::autodiff as other_autodiff; // bring `autodiff` in scope
-   |                        +++++++++++++++++
+LL | use my_macro::autodiff_forward as other_autodiff_forward; // bring `autodiff_forward` in scope
+   |                                   ++++++++++++++++++++++
 
-error: this rustc version does not support autodiff
+error: this rustc version does not support autodiff_forward
   --> $DIR/visibility.rs:14:1
    |
-LL | #[autodiff]
-   | ^^^^^^^^^^^
+LL | #[autodiff_forward]
+   | ^^^^^^^^^^^^^^^^^^^
 
 error: aborting due to 2 previous errors