diff --git a/src/test/ui/borrowck/borrowck-closures-two-mut.nll.stderr b/src/test/ui/borrowck/borrowck-closures-two-mut.nll.stderr
deleted file mode 100644
index a21a6e36778..00000000000
--- a/src/test/ui/borrowck/borrowck-closures-two-mut.nll.stderr
+++ /dev/null
@@ -1,78 +0,0 @@
-error[E0499]: cannot borrow `x` as mutable more than once at a time (Ast)
-  --> $DIR/borrowck-closures-two-mut.rs:24:24
-   |
-LL |     let c1 = to_fn_mut(|| x = 4);
-   |                        -- - previous borrow occurs due to use of `x` in closure
-   |                        |
-   |                        first mutable borrow occurs here
-LL |     let c2 = to_fn_mut(|| x = 5); //~ ERROR cannot borrow `x` as mutable more than once
-   |                        ^^ - borrow occurs due to use of `x` in closure
-   |                        |
-   |                        second mutable borrow occurs here
-LL |     //~| ERROR cannot borrow `x` as mutable more than once
-LL | }
-   | - first borrow ends here
-
-error[E0499]: cannot borrow `x` as mutable more than once at a time (Ast)
-  --> $DIR/borrowck-closures-two-mut.rs:35:24
-   |
-LL |     let c1 = to_fn_mut(|| set(&mut x));
-   |                        --          - previous borrow occurs due to use of `x` in closure
-   |                        |
-   |                        first mutable borrow occurs here
-LL |     let c2 = to_fn_mut(|| set(&mut x)); //~ ERROR cannot borrow `x` as mutable more than once
-   |                        ^^          - borrow occurs due to use of `x` in closure
-   |                        |
-   |                        second mutable borrow occurs here
-LL |     //~| ERROR cannot borrow `x` as mutable more than once
-LL | }
-   | - first borrow ends here
-
-error[E0499]: cannot borrow `x` as mutable more than once at a time (Ast)
-  --> $DIR/borrowck-closures-two-mut.rs:42:24
-   |
-LL |     let c1 = to_fn_mut(|| x = 5);
-   |                        -- - previous borrow occurs due to use of `x` in closure
-   |                        |
-   |                        first mutable borrow occurs here
-LL |     let c2 = to_fn_mut(|| set(&mut x)); //~ ERROR cannot borrow `x` as mutable more than once
-   |                        ^^          - borrow occurs due to use of `x` in closure
-   |                        |
-   |                        second mutable borrow occurs here
-LL |     //~| ERROR cannot borrow `x` as mutable more than once
-LL | }
-   | - first borrow ends here
-
-error[E0499]: cannot borrow `x` as mutable more than once at a time (Ast)
-  --> $DIR/borrowck-closures-two-mut.rs:49:24
-   |
-LL |     let c1 = to_fn_mut(|| x = 5);
-   |                        -- - previous borrow occurs due to use of `x` in closure
-   |                        |
-   |                        first mutable borrow occurs here
-LL |     let c2 = to_fn_mut(|| { let _y = to_fn_mut(|| set(&mut x)); }); // (nested closure)
-   |                        ^^                                  - borrow occurs due to use of `x` in closure
-   |                        |
-   |                        second mutable borrow occurs here
-...
-LL | }
-   | - first borrow ends here
-
-error[E0499]: cannot borrow `x` as mutable more than once at a time (Ast)
-  --> $DIR/borrowck-closures-two-mut.rs:61:24
-   |
-LL |     let c1 = to_fn_mut(|| set(&mut *x.f));
-   |                        --           - previous borrow occurs due to use of `x` in closure
-   |                        |
-   |                        first mutable borrow occurs here
-LL |     let c2 = to_fn_mut(|| set(&mut *x.f));
-   |                        ^^           - borrow occurs due to use of `x` in closure
-   |                        |
-   |                        second mutable borrow occurs here
-...
-LL | }
-   | - first borrow ends here
-
-error: aborting due to 5 previous errors
-
-For more information about this error, try `rustc --explain E0499`.
diff --git a/src/test/ui/issue-45697-1.nll.stderr b/src/test/ui/issue-45697-1.nll.stderr
deleted file mode 100644
index cf108691a0e..00000000000
--- a/src/test/ui/issue-45697-1.nll.stderr
+++ /dev/null
@@ -1,34 +0,0 @@
-error[E0506]: cannot assign to `*y.pointer` because it is borrowed (Ast)
-  --> $DIR/issue-45697-1.rs:30:9
-   |
-LL |         let z = copy_borrowed_ptr(&mut y);
-   |                                        - borrow of `*y.pointer` occurs here
-LL |         *y.pointer += 1;
-   |         ^^^^^^^^^^^^^^^ assignment to borrowed `*y.pointer` occurs here
-
-error[E0503]: cannot use `*y.pointer` because it was mutably borrowed (Mir)
-  --> $DIR/issue-45697-1.rs:30:9
-   |
-LL |         let z = copy_borrowed_ptr(&mut y);
-   |                                   ------ borrow of `y` occurs here
-LL |         *y.pointer += 1;
-   |         ^^^^^^^^^^^^^^^ use of borrowed `y`
-...
-LL |         *z.pointer += 1;
-   |         --------------- borrow later used here
-
-error[E0506]: cannot assign to `*y.pointer` because it is borrowed (Mir)
-  --> $DIR/issue-45697-1.rs:30:9
-   |
-LL |         let z = copy_borrowed_ptr(&mut y);
-   |                                   ------ borrow of `*y.pointer` occurs here
-LL |         *y.pointer += 1;
-   |         ^^^^^^^^^^^^^^^ assignment to borrowed `*y.pointer` occurs here
-...
-LL |         *z.pointer += 1;
-   |         --------------- borrow later used here
-
-error: aborting due to 3 previous errors
-
-Some errors occurred: E0503, E0506.
-For more information about an error, try `rustc --explain E0503`.
diff --git a/src/test/ui/issue-46471-1.nll.stderr b/src/test/ui/issue-46471-1.nll.stderr
deleted file mode 100644
index 0108056bc72..00000000000
--- a/src/test/ui/issue-46471-1.nll.stderr
+++ /dev/null
@@ -1,28 +0,0 @@
-error[E0597]: `z` does not live long enough (Ast)
-  --> $DIR/issue-46471-1.rs:16:14
-   |
-LL |         &mut z
-   |              ^ borrowed value does not live long enough
-LL |     };
-   |     - `z` dropped here while still borrowed
-...
-LL | }
-   | - borrowed value needs to live until here
-
-error[E0597]: `z` does not live long enough (Mir)
-  --> $DIR/issue-46471-1.rs:16:9
-   |
-LL |       let y = {
-   |  _____________-
-LL | |         let mut z = 0;
-LL | |         &mut z
-   | |         ^^^^^^ borrowed value does not live long enough
-LL | |     };
-   | |     -
-   | |     |
-   | |_____borrowed value only lives until here
-   |       borrow later used here
-
-error: aborting due to 2 previous errors
-
-For more information about this error, try `rustc --explain E0597`.