diff --git a/rust-version b/rust-version
index 584f9f86b98..f3c0b833d1a 100644
--- a/rust-version
+++ b/rust-version
@@ -1 +1 @@
-a605441e049f0b6d5f7715b94b8ac4662fd7fcf6
+9ff30a7810c586819a78188c173a7b74adbb9730
diff --git a/tests/compile-fail/stacked_borrows/illegal_write6.rs b/tests/compile-fail/stacked_borrows/illegal_write6.rs
index 86f2c0f350e..6985e7f0ead 100644
--- a/tests/compile-fail/stacked_borrows/illegal_write6.rs
+++ b/tests/compile-fail/stacked_borrows/illegal_write6.rs
@@ -7,6 +7,6 @@ fn main() {
 fn foo(a: &mut u32, y: *mut u32) -> u32 {
     *a = 1;
     let _b = &*a;
-    unsafe { *y = 2; } //~ ERROR: borrow stack
+    unsafe { *y = 2; } //~ ERROR: not granting access to tag
     return *a;
 }