bump Rust, patch no longer needed

Author: RalfJung

rust-src.diff

@@ -1,24 +0,0 @@
-diff --git a/library/alloc/tests/arc.rs b/library/alloc/tests/arc.rs
-index eb379e4d6a1..9191fa95150 100644
---- a/library/alloc/tests/arc.rs
-+++ b/library/alloc/tests/arc.rs
-@@ -212,6 +212,7 @@ fn hmm<'a>(val: &'a mut Weak<&'a str>) -> Weak<&'a str> {
- }
- 
- #[test]
-+#[cfg_attr(miri, ignore)] // test has UB (https://github.com/rust-lang/rust/issues/104565)
- fn arc_from_vec_opt() {
-     let mut v = Vec::with_capacity(64);
-     v.push(0usize);
-diff --git a/library/alloc/tests/rc.rs b/library/alloc/tests/rc.rs
-index 1d5f3c52006..0a19162a402 100644
---- a/library/alloc/tests/rc.rs
-+++ b/library/alloc/tests/rc.rs
-@@ -208,6 +208,7 @@ fn hmm<'a>(val: &'a mut Weak<&'a str>) -> Weak<&'a str> {
- }
- 
- #[test]
-+#[cfg_attr(miri, ignore)] // test has UB (https://github.com/rust-lang/rust/issues/104565)
- fn rc_from_vec_opt() {
-     let mut v = Vec::with_capacity(64);
-     v.push(0usize);

rust-version

@@ -1 +1 @@
-nightly-2022-11-19
+nightly-2022-11-20