log error.message

test/integration/pick-tests.js

@@ -106,6 +106,6 @@ const runFile = async (file, action, page, script) => {
 })().catch(err => {
     // Handle promise rejections by exiting with a nonzero code to ensure that tests don't erroneously pass
     // eslint-disable-next-line no-console
-    console.error(err);
+    console.error(err.message);
     process.exit(1);
 });

test/integration/scratch-tests.js

@@ -120,6 +120,6 @@ const testFile = (file, page) => test(file, async t => {
 })().catch(err => {
     // Handle promise rejections by exiting with a nonzero code to ensure that tests don't erroneously pass
     // eslint-disable-next-line no-console
-    console.error(err);
+    console.error(err.message);
     process.exit(1);
 });