diff --git a/src/rt/rust_util.h b/src/rt/rust_util.h
index 211ad71b545..76bcfd36fdc 100644
--- a/src/rt/rust_util.h
+++ b/src/rt/rust_util.h
@@ -87,17 +87,6 @@ inline size_t vec_size(size_t elems) {
     return sizeof(rust_vec) + sizeof(T) * elems;
 }
 
-template <typename T>
-inline rust_vec *
-vec_alloc(size_t alloc_elts, size_t fill_elts, const char *name) {
-    rust_task *task = rust_task_thread::get_task();
-    size_t size = vec_size<T>(alloc_elts);
-    rust_vec *vec = (rust_vec *) task->kernel->malloc(size, name);
-    vec->fill = fill_elts * sizeof(T);
-    vec->alloc = alloc_elts * sizeof(T);
-    return vec;
-}
-
 template <typename T>
 inline T *
 vec_data(rust_vec *v) {