diff --git a/build_sysroot/Cargo.lock b/build_sysroot/Cargo.lock
index d06a3ca4cf4..d14d8e3734f 100644
--- a/build_sysroot/Cargo.lock
+++ b/build_sysroot/Cargo.lock
@@ -128,9 +128,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.140"
+version = "0.2.141"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99227334921fae1a979cf0bfdfcc6b3e5ce376ef57e16fb6fb3ea2ed6095f80c"
+checksum = "3304a64d199bb964be99741b7a14d26972741915b3649639149b2479bb46f4b5"
 dependencies = [
  "rustc-std-workspace-core",
 ]
diff --git a/example/mini_core.rs b/example/mini_core.rs
index 5792ccd7cea..6ab226b4691 100644
--- a/example/mini_core.rs
+++ b/example/mini_core.rs
@@ -480,6 +480,15 @@ fn panic_bounds_check(index: usize, len: usize) -> ! {
     }
 }
 
+#[lang = "panic_cannot_unwind"]
+#[track_caller]
+fn panic_cannot_unwind() -> ! {
+    unsafe {
+        libc::puts("panic in a function that cannot unwind\n\0" as *const str as *const i8);
+        intrinsics::abort();
+    }
+}
+
 #[lang = "eh_personality"]
 fn eh_personality() -> ! {
     loop {}
diff --git a/rust-toolchain b/rust-toolchain
index 1655cbbd6de..82371ddf3ba 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2023-03-30"
+channel = "nightly-2023-04-09"
 components = ["rust-src", "rustc-dev", "llvm-tools-preview"]