ci: Does set -e really make it work??

Author: tlsa

.github/workflows/build.yaml

@@ -250,14 +250,22 @@ jobs:
       run: |
         export TARGET_WORKSPACE="$(pwd)/projects"
         export HOST="${{ matrix.build.toolchain }}"
-        source docs/env.sh
+        set -e
+        if ! source docs/env.sh; then
+          echo "env.sh failed with exit code $?"
+          exit 1
+        fi
         make -j"$(nproc)" TARGET=${{ matrix.build.frontend }}
 
     - name: Make package
       run: |
         export TARGET_WORKSPACE="$(pwd)/projects"
         export HOST="${{ matrix.build.toolchain }}"
-        source docs/env.sh
+        set -e
+        if ! source docs/env.sh; then
+          echo "env.sh failed with exit code $?"
+          exit 1
+        fi
         make package TARGET=${{ matrix.build.frontend }}
 
     # Can't avoid `upload-artifact` zipping the package