cpan tries to install a module even if it can't install all of its prereqs. If its test suite passes, the module will be installed despite the missing dependency.

I suspect the second go around was quieter because of a module that got installed despite a missing dependency on the first go around.

In reply to Re^3: Installing Object::InsideOut fails with circular dependency on Math::Random::MT::Auto by ikegami
in thread Installing Object::InsideOut fails with circular dependency on Math::Random::MT::Auto by Lotus1

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