fix SCRIPT

Author: marcoieni

src/ci/docker/host-x86_64/i686-gnu-1/Dockerfile

@@ -25,7 +25,7 @@ RUN sh /scripts/sccache.sh
 
 ENV RUST_CONFIGURE_ARGS --build=i686-unknown-linux-gnu
 # We run the other tests in i686-gnu-2
-ENV SCRIPT python3 ../x.py --stage 2 \
+ENV SCRIPT python3 ../x.py --stage 2 test \
   --skip compiler \
   --skip library \
   --skip tidyselftest \