diff --git a/ci/core-test/src/lib.rs b/ci/core-test/src/lib.rs
index 0c9ac1a..e311edb 100644
--- a/ci/core-test/src/lib.rs
+++ b/ci/core-test/src/lib.rs
@@ -1 +1,7 @@
 #![no_std]
+
+use chrono::{TimeZone, Utc};
+
+pub fn create_time() {
+    let _ = Utc.ymd(2019, 1, 1).and_hms(0, 0, 0);
+}