fixup! Compile program in the nightly CI

Author: antoyo

.github/workflows/nightly_rustc.yml

@@ -109,12 +109,19 @@ jobs:
       run: |
         cd rustc_codegen_gcc/tests/hello-world
         cargo +my-toolchain build
+        echo "*** 1"
         cargo +my-toolchain run > hello_world_stdout
 
+        echo "*** 2"
+        echo hello_world_stdout
+
         expected_output="40"
         test $(cat hello_world_stdout) == $expected_output || (echo "Output differs. Actual output: $(cat hello_world_stdout)"; exit 1)
 
+        echo "*** 3"
+
         objcopy --dump-section .comment=comment target/debug/hello_world
         grep --text "^.rustc version .* with libgccjit" comment
         grep --text 'libgccjit' comment
         grep --text 'GCC: ' comment
+        echo "*** 4"