It's probably a problem beyond your control; for example, for the particular failure of ExtUtils-ModuleMaker-0.39, within the same run for this particular testing machine, the same failure was reported for

Earlier on in this run IO-1.22 was tested, and passed, probably as a result of some other package requiring it. What probably happens is that the build directory for this IO-1.22 gets added to @INC in a way so as to cause this version mis-match within the testers machine.

Thus, it seems that this failure depends on some other package happening to have a prerequisite of IO that is tested before your package is tested. You can't do very much about that, beyond reporting the problem to the authors of the automated testing software.

In reply to Re^3: More on "IO object version does not match bootstrap parameter" error by randyk
in thread More on "IO object version does not match bootstrap parameter" error by jkeenan1

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