Auto merge of #25239 - marmeladema:issue-23607/test-tidy-no-wpt, r=jdm

Make `mach test-tidy --no-wpt` compatible with Python3

Make `mach test-tidy --no-wpt` compatible with Python3
See also #23607

After this pull request, all python files (except WPT) will be checked for Python3 syntax compatibility.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors

<!-- Either: -->
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because ___

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<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->

etc/ci/performance/test_differ.py

@@ -54,9 +54,9 @@ for key in keys:
     value1 = data1.get(key)
     value2 = data2.get(key)
     if value1 and not(value2):
-        print ("{}Test {}: missing from {}.{}".format(WARNING, key, args.file2, END))
+        print("{}Test {}: missing from {}.{}".format(WARNING, key, args.file2, END))
     elif value2 and not(value1):
-        print ("{}Test {}: missing from {}.{}".format(WARNING, key, args.file1, END))
+        print("{}Test {}: missing from {}.{}".format(WARNING, key, args.file1, END))
     elif value1 and value2:
         total1 += value1
         total2 += value2

etc/memory_reports_over_time.py

@@ -69,7 +69,7 @@ def transform_report_for_test(report):
     while remaining:
         (name, value) = remaining.pop()
         transformed[name] = '%s %s' % (value['amount'], value['unit'])
-        remaining += map(lambda (k, v): (name + '/' + k, v), list(value['children'].items()))
+        remaining += map(lambda k_v: (name + '/' + k_v[0], k_v[1]), list(value['children'].items()))
     return transformed
 
 

etc/taskcluster/decision_task.py

@@ -205,6 +205,7 @@ def linux_tidy_unit():
         .with_treeherder("Linux x64", "Tidy+Unit")
         .with_script("""
             ./mach test-tidy --no-progress --all
+            python3 ./mach test-tidy --no-progress --all --no-wpt
             python3 ./mach build --dev
             python3 ./mach test-unit
             python3 ./mach package --dev