TO-DROP: debug GITHUB_ENV as builder

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

.github/workflows/main.yml

@@ -62,6 +62,7 @@ jobs:
     - run: sudo --preserve-env --set-home --user=builder sh -c 'env | grep /__w/_temp/'
     - run: sudo --preserve-env --set-home --user=builder sh -c 'ls -la /__w/_temp/'
     - run: sudo --preserve-env --set-home --user=builder sh -c 'ls -la /__w/_temp/_runner_file_commands/'
+    - run: chmod o+w $GITHUB_ENV && sudo --preserve-env --set-home --user=builder sh -c 'echo a=b >>$GITHUB_ENV'
     - run: chmod o+w $GITHUB_ENV && sudo --preserve-env --set-home --user=builder ci/run-build-and-tests.sh
     - name: print test failures
       if: failure() && env.FAILED_TEST_ARTIFACTS != ''