diff --git a/src/Cargo.toml b/src/Cargo.toml
index 35ba022c489..98eb26c7753 100644
--- a/src/Cargo.toml
+++ b/src/Cargo.toml
@@ -56,5 +56,5 @@ debug-assertions = false
 debug = false
 debug-assertions = false
 
-[patch.'https://github.com/rust-lang/cargo']
+[patch."https://github.com/rust-lang/cargo"]
 cargo = { path = "tools/cargo" }
diff --git a/src/libcompiler_builtins b/src/libcompiler_builtins
index 38ffaf97aa4..ef4951582f6 160000
--- a/src/libcompiler_builtins
+++ b/src/libcompiler_builtins
@@ -1 +1 @@
-Subproject commit 38ffaf97aa418cc369ca0197a72a0b927cc0f622
+Subproject commit ef4951582f620c589cd9e18ec182538bf116bce3