Enable overflow checks in Rust

Bug: 184063125
Test: Existing Rust Test Suites
Change-Id: I1b8f3cb22a229bfc7da81bf3857f6bf5a9f6c220
diff --git a/rust/config/global.go b/rust/config/global.go
index 9208ddb..3fde738 100644
--- a/rust/config/global.go
+++ b/rust/config/global.go
@@ -47,6 +47,7 @@
 		"-C debuginfo=2",
 		"-C opt-level=3",
 		"-C relocation-model=pic",
+		"-C overflow-checks=on",
 		// Use v0 mangling to distinguish from C++ symbols
 		"-Z symbol-mangling-version=v0",
 	}