Fix the `tests-done` github actions step, again (#10512)

.github/workflows/tests.yml

@@ -367,13 +367,16 @@ jobs:
       - name: Set build result
         env:
           NEEDS_CONTEXT: ${{ toJSON(needs) }}
-        # the `jq` incantation dumps out a series of "<job> <result>" lines
+        # the `jq` incantation dumps out a series of "<job> <result>" lines.
+        # we set it to an intermediate variable to avoid a pipe, which makes it
+        # hard to set $rc.
         run: |
-          set -o pipefail
-          jq -r 'to_entries[] | [.key,.value.result] | join(" ")' \
-                          <<< $NEEDS_CONTEXT |
+          rc=0
+          results=$(jq -r 'to_entries[] | [.key,.value.result] | join(" ")' <<< $NEEDS_CONTEXT)
           while read job result ; do
               if [ "$result" != "success" ]; then
                   echo "::set-failed ::Job $job returned $result"
+                  rc=1
               fi
-              done
+          done <<< $results
+          exit $rc

changelog.d/10512.misc

@@ -0,0 +1 @@
+Update the `tests-done` Github Actions status.