[Issue 21019] New: Azure pipelines Windows_VisualD win32-ldc fails with Heisenbug

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21019

          Issue ID: 21019
           Summary: Azure pipelines Windows_VisualD win32-ldc fails with
                    Heisenbug
           Product: D
           Version: D2
          Hardware: x86
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: bugzilla at digitalmars.com

The failure message is:

Test compilable\ddoc5.d failed:
D:\a\1\s\test\test_results\b2300e367bf8839cd0d6eaaa308caba39ee7b276c4a57ab8ddccc58444c4ca17:
The process cannot access the file because it is being used by another process.

What should happen is it should sleep for a bit and then try again, instead of
aborting the test.

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