Change VNU back to latest and add some better logging.

Author: meisterT

.github/jobs/webstandard.sh

@@ -117,7 +117,7 @@ if [ "$TEST" = "w3cval" ]; then
 
     section_start "Install testsuite"
     cd "$DIR"
-    wget https://github.com/validator/validator/releases/download/20.6.30/vnu.linux.zip
+    wget https://github.com/validator/validator/releases/download/latest/vnu.linux.zip
     unzip -q vnu.linux.zip
     section_end
 
@@ -128,7 +128,7 @@ if [ "$TEST" = "w3cval" ]; then
         # shellcheck disable=SC2086
         "$DIR"/vnu-runtime-image/bin/vnu --errors-only --exit-zero-always --skip-non-$typ --format json $FLTR "$URL" 2> result.json
         # shellcheck disable=SC2086
-        NEWFOUNDERRORS=$("$DIR"/vnu-runtime-image/bin/vnu --errors-only --exit-zero-always --skip-non-$typ --format gnu $FLTR "$URL" 2>&1 | wc -l)
+        NEWFOUNDERRORS=$("$DIR"/vnu-runtime-image/bin/vnu --errors-only --exit-zero-always --skip-non-$typ --format gnu $FLTR "$URL" 2>&1 | tee "$ARTIFACTS/w3c_${typ}_${URL}.log | wc -l)
         FOUNDERR=$((NEWFOUNDERRORS+FOUNDERR))
         python3 -m "json.tool" < result.json > "$ARTIFACTS/w3c$typ$URL.json"
         trace_off; python3 .github/jobs/jsontogha.py "$ARTIFACTS/w3c$typ$URL.json"; trace_on