https://issues.dlang.org/show_bug.cgi?id=20327

          Issue ID: 20327
           Summary: [REG 2.089 beta] undefined reference to «
                    core.thread.Thread.__Class »
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: b2.temp@gmx.com

in the provided folder run

   $ dub test --force

to see a bunch of undefined reference when linking. Worked until 2.088.1.

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