diff --git a/ci/run_task.sh b/ci/run_task.sh
index ae9b1f4..a6edfe8 100755
--- a/ci/run_task.sh
+++ b/ci/run_task.sh
@@ -184,6 +184,9 @@ do_feature_matrix() {
         $cargo test --no-default-features
     fi
 
+    $cargo build --all-features
+    $cargo test --all-features
+
     if [ -n "${FEATURES_WITH_STD}" ]; then
         loop_features "std" "${FEATURES_WITH_STD}"
     fi