Ignore broken pipe error messages and statuses

.github/workflows/deploy-gcp-tests.yml

@@ -499,7 +499,10 @@ jobs:
           token_format: 'access_token'
 
       # Show all the logs since the container launched,
-      # following until Sapling activation (or the test finishes)
+      # following until Sapling activation (or the test finishes).
+      #
+      # The log pipeline ignores the exit status of `docker logs`.
+      # Errors in the tests are caught by the final test status job.
       - name: Show logs for ${{ inputs.test_id }} test (sprout)
         run: |
           gcloud compute ssh \
@@ -509,12 +512,11 @@ jobs:
           --ssh-flag="-o ServerAliveInterval=5" \
           --command \
           "\
-          set -o pipefail; \
           docker logs \
           --tail all \
           --follow \
           ${{ inputs.test_id }} | \
-          tee --output-error=exit-nopipe /dev/stderr | \
+          tee --output-error=exit /dev/stderr | \
           grep --max-count=1 --extended-regexp --color=always \
           '(estimated progress.*network_upgrade.*=.*Sapling)|(test result:.*finished in)' \
           "
@@ -567,12 +569,11 @@ jobs:
           --ssh-flag="-o ServerAliveInterval=5" \
           --command \
           "\
-          set -o pipefail; \
           docker logs \
           --tail ${{ env.EXTRA_LOG_LINES }} \
           --follow \
           ${{ inputs.test_id }} | \
-          tee --output-error=exit-nopipe /dev/stderr | \
+          tee --output-error=exit /dev/stderr | \
           grep --max-count=1 --extended-regexp --color=always \
           '(verified final checkpoint)|(test result:.*finished in)' \
           "
@@ -624,12 +625,11 @@ jobs:
           --ssh-flag="-o ServerAliveInterval=5" \
           --command \
           "\
-          set -o pipefail; \
           docker logs \
           --tail ${{ env.EXTRA_LOG_LINES }} \
           --follow \
           ${{ inputs.test_id }} | \
-          tee --output-error=exit-nopipe /dev/stderr | \
+          tee --output-error=exit /dev/stderr | \
           grep --max-count=1 --extended-regexp --color=always \
           'test result:.*finished in' \
           "