Add FIXME for WASM32

Author: LuuuXXX

src/ci/docker/host-x86_64/wasm32/Dockerfile

@@ -57,6 +57,7 @@ COPY static/gitconfig /etc/gitconfig
 ENV NO_CHANGE_USER=1
 RUN chown 10719 -R /emsdk-portable/
 
-# Exclude library/alloc, library/std due to OOM in benches.
+# Exclude library/alloc due to OOM in benches.
+# FIXME: Fix std tests
 ENV SCRIPT python3 ../x.py test --stage 2 --host='' --target $TARGETS \
     --skip library/alloc --skip library/std