diff --git a/ci/test-checks.sh b/ci/test-checks.sh
index 817e9d68d8..4ddde2fc34 100755
--- a/ci/test-checks.sh
+++ b/ci/test-checks.sh
@@ -27,7 +27,7 @@ echo --- build environment
 )
 
 export RUST_BACKTRACE=1
-export RUSTFLAGS="-D warnings"
+export RUSTFLAGS="-D warnings -A incomplete_features"
 
 # Only force up-to-date lock files on edge
 if [[ $CI_BASE_BRANCH = "$EDGE_CHANNEL" ]]; then